Paying for ads like that is still a subset of fork (1). Even as propaganda, it has to somehow be "worth it" to spend the money.

Endless investing is, depending how you look at it, either not (just) ad supported and preceeds the premise, or it still is ad supported (and hence (1)) just with extra steps to badly hide who is doing it.

Hmm… I suppose the purchase of a vote in a democracy is something that a poor person might not otherwise be able to sell, and where "we advertised and convinced you" is (depending on campaign finance etc. rules) one of the legitimate ways to do it… but even then, for reasons too long to type on my phone, I'd say in this case it would still make the poor poorer.