What's up with the OT and PT schools requiring a doctorate?

This thread has been very interesting. I didn’t know that pharmacists and nurses had also transitioned their training to professional degrees.

http://www.nytimes.com/2011/10/02/health/policy/02docs.html?_r=2&ref=health

I just cannot imagine insurance companies will increase their payments to the providers for the extra training. So it seems to me they are pinching the students to pay for more training. Yes I benefit, but the students will pay higher tuition.