I got more followers in the last 5 days than I've had in the last 15 years: https://i.imgur.com/hjeVvtZ.png
Something is up for sure.
The same way Spotify, Twitter, Snapchat and other loss-making companies do? Bring in new financing and new advertisers, fire staff.
The core site functionality has not changed in over a decade, there’s no need to try to be Instagram.
How does this work with IAP and ads? Or do you mean that only Reddit Premium users should have access to third party apps? Because that would be much more expensive than the $2.50/mo that people are riled up about with the new API pricing.
You can't. Imagine you started a website, you're losing money, and 3P devs are serving your data, ripping out your ads, profiting themselves, and then staging entire public campaigns against you ask them to contribute or get lost.
If I had a small website and asked HN for advice in this regard, 100% of replies would be to boot the 3P dev. Nobody would say, "Dude, let him/her keep doing it! You're being greedy and stupid!"