How come more doctors don't prescribe suboxone?

Ya got me.... 1) requires a certification that is far less work than a driver's license.
BUT
2) only about 5% of the relevant doctors get certified.
and 3) of those certified the MAJORITY DO NOT SEE ANY SIGNIFICANT NUMBER OF PATIENTS.
Just had a lecture on that 2 days ago from the national leaders. They can't say why this is like this.
Suboxone. In the usa suboxone is mainly used to treat addiction issues. It requires a special certification and a special dea number. Most doctors perceive this as an open door to scrutiny by the dea.