Because here’s the rub: it’s not like people are addicted or have to have these services—it’s more like they are addicted or have to be a part of the network effect of these services. (Oh I don’t know about that guy, Tony, he ain’t got a FB profile...) And once these services become something-price they just won’t be viable any more, because they are not really essential and paying for 8+ services (or whatever?) is not feasible.
But realistically services like FB are just stuck with their current business model; they will not pivot to something else because they know they would be screwed. But they, of course, twist that into some kind of consumer+small business sympathy spiel.
Who are these ads directed at? It’s not the general public. But is it small business owners? Politicians? Regulators? I don’t have a good answer.
I wouldn't be surprised if they tried to push an angle that it's immoral to withhold your data, that you become a leech, a free rider, a pirate.