It would be a better analogy if tobacco companies sold ad space on their packs and chose not to do business with a private for-profit anti-smoking solicitation group.

No it would not. Meta is an advertising company that sells ad space. More specifically, Meta is the dominant firm in the social advertising market which is an oligopoly.

It is "the business", not an imagined side revenue stream.

And that would be a blatant admission of guilt.