Careful about letting "perfect" be the enemy of "good enough". Culture has always been determined by people who are well off enough to spend time on it. Even the people who are commissioned creators (Dickens was paid by the word, Mozart had aristocratic sponsors) spent thousands of hours working for free to get to the point where anyone would pay them.

Further, it's not like ads have been some democratizing element for cultural creation. They pay a pittance for everyone but the large traffic generators. No one is quitting their job at Denny's to become a full time blogger paid by google adwords. The independent instagram/youtube/blogger "celebrities" all still keep full time jobs until they get enough sponsorship to pay the bills.