I don't use Spotify much (afaict they've done more to damage artist economics than outright piracy), but at least they have a paid/premium layer of service that

I don't use Spotify much (afaict they've done more to damage artist economics than outright piracy), but at least they have a paid/premium layer of service that one can pay for and focus on specific desired content without add interruptions. Facebook and Instagram? Nope. You can't even pay them for an experience which lets you focus on what you want. Which means that the only economic incentives come from the ad revenue side, and the user engagement side will be seen primarily in terms of manipulation.