I think that’s a fairly small part of it. There were two big things that happened:

1. Scientists were able to show that the HPV vaccine prevents cervical cancer. This gets rid of the treatment/cure payment thing entirely.
2. Air pollution turned out to be a lot more harmful than people realized, which means that there’s a much stronger reason to get rid of combustion as a routine thing that happens, and Trump’s bribe-payers would be out a really huge amount of money if that happened.