I don't think so. Current gen game RDR2 is 100GB. My guess is next gen games will average at least at 120GB and launch consoles will have from 2TB to 4TB.

I don't think there will be. It's just simpler to have one, produce one and stock one.

I'd almost rather they didn't do something so simple as lacking a disc drive to distinguish between the two. If they made a "premium" model that sort of went all PS3 and put hardware based Bc and some extra media compatibility, I'd buy that for even 150 over a base 399 sku. I think the main goal they should be aiming for is to ensure that at least one sku at launch is comparable to their last launch.

What I think is interesting is that the premium sku concept isn't exactly exclusive to consoles, and it seems to repeatedly work. People bought enough 1K$ "premium" iPhones that the standard sku was superceded and thus the standard acceptable price raised across the board. Macbook vs the more feature packed Macbook pro, same thing. Microsoft surface vs surface pro, again few people even remember the lower price sku. I really wonder if Sony could do the same for PS5?

This.

And having worked at retail before, selling digital only titles is a pain. I hate to stereotype, but a lot of customers really are uninformed. And they always want to return EVERYTHING no matter the condition. Digital returns aren't an option. Plus there'd be less of a reason for customers to come to store to buy digital if they can just get it off the PS/Xbox store at home. I think the only reason they do that now is because the vast majority of retail shoppers purchase physical titles.

Disc-less consoles won't work yet but I wouldn't be surprised if Sony in particular tried that right out of the gate. They've been letting the PS4 success get to their heads, ignoring that Nintendo was basically a non-competitor most of the cycle and Xbox shat themselves right at the reveal. And the last two console cycles began with either Sony or Microsoft overestimating their appeal based on them "winning" the previous cycle. 

How has sony been letting the PS4 success get to their head? 

The smart money for PS5 is to release in 2019 at a $399 price point (in NA) with a disc drive designed to read 100GB+ disks.  I still think they are going to lose to Switch regardless of what they do, but this can actually make them profitable unlike the PS3.

Dumb money is they go diskless, or overpower the system so that it's priced at $499+ or release after 2019.  Really dumb money is they get "creative" and bundle a VR set or some other expensive peripheral with every system.  They are going lose big if they do any of these things.  Same with Microsoft and their next system.

Ok that came out of nowhere......

Release in 2019? why?

Lose to switch? How? 

I'd say PS waits until mid gen to try a discless model, if their going to. The real point is for people who need to save money. $399 and $499 isn't for those consumers. Typical year 1 and 2 buyers don't have that problem, and a discless console would be seen as a luxury, not a necessity.

Launch a $299 1080p/60 SKU, and a $499 4k/60 SKU. After 3 years, when the 1080p model is slimmed and dropped to $199, offer a third SKU at 1080p, but with no disc drive or mass storage drive for $99. Let the customer buy an external storage drive of whatever size they want for $50-$100. PS can offer a few sizes for convenience if they like.

At the same time, when the 4k/60 model is slimmed and dropped to $399, they could, also do the same thing an add a 4th SKU at 4k, but with no disc drive or mass storage drive for $299. Let the customer buy an external storage drive of whatever size they want for $50-$100. Digital should require much more storage space anyway.

This would give PS a full line up from top to bottom mid gen. $99, $199, $299, $399. While they could just launch all 4 SKU's right off the bat, $199, $299, $399, $499, I'd think it may be too confusing for some customers and may put people off, so it might be better to wait until mid gen once momentum has been built up.

There is also the possibility of keeping the disc drive and dropping the mass storage instead. Many casuals would need to learn one way or another, that some consoles don't have disc drives or all don't have mass storage. Design every SKU to retail at a $99 price point without mass storage, and let the customer buy an external of their choosing, instead of paying $50 extra for the console and it's absolute minimal storage limitations. Consoles don't like to sell for $49 prices anyway.

Just some suggestions if a lower price point is that necessary for marketing and sales next gen.

There's the whole censorship issue that got it's own forum thread. During the summer, there was the no cross-play thing for Fortnite which admittedly they did away with (after incessant backlash and BS PR-speak of why they "couldn't" do it.) They even went as far as to lock Epic game accounts registered on the PS4 to the PS4 so that Switch players couldn't use the skins/emotes/etc they had on PS4 on the Switch.  It took them months to reverse-course but at least they did.

Looking farther back, Sony's had their moments. I remember when they didn't allow Fallout 4 mods for similarly stupid reasons, and back during the latter half of the PS3 days, they pushed harder than most for the Online Passes in their games, only removing the feature once they say how it killed many sales for their exclusives.

Release in 2019, because the PS4 is getting old and its due for another version.  6 years is the typical span between releases for a Sony console.

"Lose to Switch?  How?"  The short version is they could have a similar situation to PS3 vs. Wii.  Sony is not invincible.