It’s less the Google tax than the “advertising is now efficient” tax.

Any other medium would theoretically have the same problem: if Ovaltine doesn’t sponsor kids’ radio shows in the 1950s and someone thinks they can deploy capital to grow a competitor, that someone will buy that slot. People couldn’t do this because there were human processes and relationships slowing this marketplace down. The thing that Google did was make it possible to test this at small scale.