The MH World 2 is to be released on Switch sucessor, not to Switch itself. It's a game that needs to run very well on a Series S, unless Capcom purposefully decide to make a game so demanding that runs whack on series S which I don't think it's happening 

Switch 2 version only needs to target the Series S version

This only makes sense in Japan, Western audiences have no idea about this key differences as World is their first game, it's the Monster Hunter they know about. As for JP audiences, Rising is selling about only half million more than World, whatever you say about gameplay seems it's not creating such substancial difference in sales between both versions 

The only reason to make 2 games instead of one is if the profits of selling both games is bigger than make only one and selling them in every platform. Let's see that Capcom will do 

The PC mags reviewing the games seem to have little trouble noticing the differences off the bat so those new who are playing Rise will notice as well especially as it's structured to take advantage of the NS hardware features, Rise has sold 500K more than World in 10 months in Japan (which is not far off 4m) while the latter has been out for four years that gap is going to increase over the next four years.

The profits of both games would be bigger than one and it has shown in the sales, Rise in 10 months has outsold the X1 and PC versions of World individually with only the PS4 version remaining, the only way your logic would work is if a NS version of world perfectly ported would match Rise's sales which mind you is joint fifth of Capcom's best selling games ever now but we all know that is very doubtful as you even admitted sales may suffer under what you suggested the total sales of World if an NS version was a thing would likely be significantly less than the total of what Rise and World is now.

This is purely because Rise is built for the platform and audience so it ends up complimenting it rather than being a hand me down.

This is highly dependent on the Switch 2's specs. The Series S may not be powerful compared to PS5 and XSX, but it is by far much more powerful than mobile hardware at this time. In addition, Series S has been churning out games that are mostly just a bit above 1080p. 

It's not impossible, but I think that having one exclusive would be better overall for Switch owners and it doesn't seem like Capcom would lose much as Nintendo is likely paying for exclusivity and the sales/profit is still extremely high 

They kept two separate lines long before World and Rise at less than half the sales what honestly makes you believe they won't after them? Why would they scale a PS version when Rise has shown a version built ground up on its own can match it in sales just fine?

Both games are multiplatform they just have dedication to different consoles.

The sales don't really back this line of thinking though World did well because it was designed with its platforms in mind hence why its more MMO like while Rise does well because it's more like the Freedom titles so Lan like features and a structure more suited to lan style gatherings so gamesplay is more in bursts than the roaming of World which heavily suits the hybrid form factor of NS.

The suggestion both you and someone else suggest ignore this completely as the reason the games are well received on their platforms is that they're designed to compliment them, if you scaled up Rise and put it on PS5 for example it would suffer not because of graphical tech but because the design doesn't compliment it same way a PS5 game scaled down wouldn't compliment NS, PC is an odd platform because its open nature has a wide selection of players so I imagine Rise is only on PC for Capcom to see if the other line appeals to the platform for future reference.

This the whole reason two lines exist in the first place, all you're doing is saying they should throw out more sales on both platforms for significantly less sales because MH games before that have done what you said have failed to take off on one of the platforms for example MH3rd which is on both PSP and PS3 was barely even was a blip on PS3. So Capcom in a sense were smarter and kept two separate lines building separate lines to best push the platforms the lines are dedicated is better for the series going forward and good ideas in each can cross over in future.

Monster Hunter is Capcom's most valuable IP.  It actually makes more sense to make as many games as possible.  They could have a "World" team and a "Rise" team and nearly double their money over having just one game.

Fairly well as in less than 10% compare that to Rise which is very much going to be within range or even outsell the sales on other platforms with the two lines approach, compare Tri Ultimate's sales to the games built for the 3DS from the ground up not even close as 3DS iterations were hitting 8m each in total with the enhanced included Tri in total on all platforms only ever hit 4.5m which one 3DS release alone would match by itself without the enhanced version, we even have an example of what you suggested on Switch with Generations selling a mil on Switch yet that pales in comparison to the 8m of Rise so right now all your logic is doing is sacrificing a whole load of sales on one platform because another platform isn't performing which isn't as smart as you think it is.

How has the exclusive route cost them profits at 8m sales (only four games in Capcom's history have sold more right now and Rise will over take some of them and may even end up second in Capcom's history) especially when 7m of those sales came within the first few months at full price and the game is still selling at a higher price than what World did? Your logic isn't adding up as all your argument is saying right now that Rise 2 shouldn't have a PC version. The PC version isn't selling so lets risk sacking near 8m sales on an unrelated platform? You haven't thought this through at all, if Rise off the back of being exclusive is in the running to outsell all of Capcom's games except one that doesn't back you in anyway.

I'll put things in perspective for you REmake 2 is at 8.9m which is third in Capcom's history should Rise outsell that and the PC version isn't pulling its weight in doing so it gives Capcom more incentive to keep Rise 2 fully exclusive while the PC shares World 2 because right now your whole argument is based on performance on that platform and not the Switch itself.

Monster Hunter Rise has sold 7.7m copies on the Switch.  Capcom released MHR numbers as of Dec 31, 2021. 
https://www.capcom.co.jp/ir/english/business/million.html

I would assume that Switch numbers are still around this amount and will probably stay that way until a significant sale or DLC is released.

Seems to be consistently selling 200k a quarter at this point on Switch so by the time Sunbreak arrives it'll be above 8m on the platform alone only MHW on PS4 has sold more on a single platform at this point but it's looking like Rise will catch up to that figure especially with a Sunbreak Master Edition.