Maybe they will have a 64GB model ready for next year. More than that is not really necessary.

It will come eventually, but not any time soon

I'm still surprised at how compressed Nintendo games are compared to other ones

Absolutely.  The costs of this technology is falling pretty fast, so I could see 48 GB cards in the not too distant future with 64 GB not far behind. 

As for how needed the added space is for 3rd parties, it's actually really hard to say.  A lot of big games are obscenely and unnecesarily bloated and could have their size reduced by a very substantial margin without much loss in quality.  And that's befor considering file size reductions that would occurr with reducing graphical fidelity.  So a lot of games could fit on a 32 GB.  Even more on a 48 GB.  And the majority on a 64 GB. 

Forgotten? No, they just don't need to on home hardware - especially when leaving it uncompressed is faster, easier, and better when space isn't much of an issue. 

Problem is that they've bloated their games so badly that space IS an issue.  My standard PS4 can hold like 10 games.  I'm constantly having to uninstall a game when I want to play a new one.  It's just ridiculous.  And a lot of it is wasted, there's no appreciable gain in quality.  It's just fat, simple as that.

You can buy an external 1 TB or 2 TB USB-HDD for ~50 bucks (and sell it for 20 - 30 bucks a few years later when you are done with PS4 gaming... or use that external drive with another device... or gift it to friends or family members in need of an external drive; the value loss is negliglible).

If you can afford PS4 games, an external drive should also be affordable.

Why do you think that?

Women's Intuition.

Offcourse it will, DS used cards from 8MB to 512MB, and 3DS uses cards from 1GB to 8GB.
Switch will defiantly have higher cards than 32GB.

DS used cars from 8MB to 512MB, and 3DS use cards from 1GB to 8GB, so there is no reason to think that 32GB will be max card for Switch.