I think it's all voluntarily controlled by the user.

Let's say theres 2 "profile builders" competing with each other.

I give them my the allowance to build my nostr profile and serve me ads.

1 is giving me the profile of a 16 year old female - highschool and interested in make-up.

Other is giving me the profile of a ~35 year old male - IT-nerd - tech-enthuisiast and entrepeneur.

(Obviously these are far apart, but that's to make the point).

I block all the advertisements, except for the advertisements I'm willing to see from one of the 2 profile builders. (I can block all the advertisements, because I'm using relays and a client which enable me to block all the advertisements).

When I want to see relevant advertisements (because I also want to get paid to consume content on #nostr) I decide only to see advertisements coming from a specific profile builder I chose.

Which do you think I'm going to choose?

Currently I hardly see ANY advertisements on #nostr, but I might be willing to see advertisements when I'M getting paid to see those ads.