Also, money for ads must come from somewhere. At least after VC and like run out of theirs... That means economy selling goods and services must generate money

Also, money for ads must come from somewhere. At least after VC and like run out of theirs... That means economy selling goods and services must generate money to be able to spend it on adds in first place. And to my understanding this sector buying the ads has not been skyrocketing like those serving the ads.