More money to be made treating disease than curing or preventing it. That is at least part of the problem. Mainstream media is highly dependent on pharmaceutical revenue for advertising. What very little conventional TV I watch is plastered with drug company advertisements.

Another problem is a lot of people would prefer a pill rather than sacrifice something in their life style habits.

But a big step in the right direction would be just getting the correct knowledge out there. The education. At least some people would make a better choice with the right knowledge. Not all but maybe many.