I can see most IP's from Sony this generation growing even more. Their brand power has reached new heights courtesy of the PS4. I don't see that slowing down unless the games themselves disappoint. 

This is a table of consoles with the most sales Dynamic. That's why ps1 and ps4 are missing.

At this point getting within 20 million of DS is really likely actually for the reasons below.

The Switch is well on pace for not just 120m+ but also 130m+. If after this year it has the same drops as the Wii had after its peak which didn't drop in sales slowly it would still sell over 130m. The PS5 exceeding it is possible but with the Switch looking like it might have a 30+ million year which would be the first time a console ever sold that much in one year that's unlikely for the time being I'd say.

No, I doubt PS5 will sell as much as PS1.  Meanwhile Switch will become the best selling system yet.

Too early to tell, but PS5 could be long lived like PS4, but I fear that 3rd parties making multiplats could run out of power due to having to stay within XBSS HW power and RAM size, so they could push to kill earlier than necessary the more powerful PS5 and XBSX too.

Switch is on track to pass 120 million with ease.

It's already sold over 70 million and Nintendo have repeatedly stated it is just entering the middle of its lifecycle. Another 50 million over the next 3-4 years will be easily accomplished, particularly with further hardware revisions, price cuts for the base model, and demand being through the roof.

You have to be trolling man. Like switch could possibly have the best year for any console, beating the NDS and you are saying it can only dream of 120mil+? Anything less for the switch would be a massive shock and disappointment. 

Like many have said before me, it is near impossible to tell at this point. We won't truly know whether or not the PS5 will be able to outsell the switch for 2-3 years, and thats just due to the nature of
A.) how well it sells in comparison to the Series X/S
B.) How the middle years for the switch go (how much momentum can it keep from this year)
C.) It will give us an idea of how it is selling relative to the other PlayStation, I use VGchartz numbers for the 3/4, and shipments from Sony for the 2 (Even if they were really bad about actually releasing them in quarters)
D.) If the PS5 starts selling less in it's 2nd year than 1st this is bad, but if the opposite happens, then it is good. Basically can it preserve its momentum and build on to it?

Historically speaking the first year has rarely broken records for most consoles sold ever (Talking as in the Switches potential 30 million in a calendar year, PS5 and XSX will not do this in 2021) Launch day sell outs also tell us little of demand, but when a console doesn't sell out, we are told much. Currently XSX/S and PS5 are both in this category of unknown real demand, we can't really measure demand till we are a year in, but even then the console in the lead will not always win, though historically speaking I do believe the one in the lead by the end of the First Year (aligned) of a generation has always won. (What I mean is X360, PS3 and Wii aligned, not Wii, PS4, and Xbox)

NS at this point will become one of the top 3 selling platforms of all time it not only has a monopoly on one side of the market but will finish this FY in the 80m range all with out needing a price cut it'll likely hit 100m before next holiday I don't see PS5 matching it.

One of the most important things for console is its consistency with software library. PS4 has been able to do that to an extent during its cycle and Xbox One X couldn't see itself being in the lead despite being more powerful. This determines the success. The launch sales figures for both PS5 and Xbox series X are already pointing towards the success of consoles from their previous gen respectively. 

"The XBox brand has a good chance to get some of the market share they lost with the XSX/S"

The Xbox brand might even struggle to keep up the market share it had with the previous generation. You cannot ignore this factor and this applies to both consoles. The covid phase could actually challenge most studios to put out the AAA titles on time. The switch will definitely go bonkers this holiday and could reach its final peak in the wake of next gen consoles and would be on a decline soon after, solely relying on first party software titles and existing user-base.