My guess is it's more that advertisers want paying customers the most, so they pay extra or otherwise pressure services to include ads into paid services.
I appreciate the option to pay more to go ad free. Though I also understand offering with ads to widen the audience at a free or lower price.
> I appreciate the option to pay more to go ad free.
You shouldn't. In practice that option is nothing but free market research for advertisers. They get to see not only who has disposable income but who's willing to spend it. They will offer even more money for your attention and eventually some executives will realize they're leaving money on the table by not taking advantage of it.
I appreciate the option to pay more to go ad free. Though I also understand offering with ads to widen the audience at a free or lower price.