[paxys]

Pricing isn't based on operating costs but market value of services offered. That's how every business in the world works.

[matrixlab]

If Meta found a way to double their ad revenue from non-paying users, would you expect the price for this subscription to double?

[rapsin4]

Yes it'll actually have to more than double, since the high-value users (from perspective of advertisers) will more likely opt-in to the ad-free plan. The opportunity cost will be insane otherwise.