Earlier quoted context omitted.
Yes, profitable. For example, prison guard unions lobby ferociously against relaxing drug laws, in order to protect prison guards' jobs and salaries: http://www.republicreport.org/2012/marijuana-lobby-illegal/ http://mic.com/articles/41531/union-of-the-snake-how-califor... EDIT: Here's a cute quote from Corrections Corporation of America, one of the largest for-profit prison companies: "any changes with respect to dr…
It's true they have a financial incentive to maintain current drug laws, but those same incentives exist for many important roles. If someone comes up with a cure for cancer, a lot of oncologists are going to be out of a job. Does that mean that oncologists are actively suppressing cancer cures?
Corrections Corporation of America and other private prison companies openly fight efforts to relax drugs laws. Same for prison guard unions; In 2008 the CCPoA, California's largest prison guard union, was the most active opponent of Prop 5, which would have expanded treatment for non-violent drug offenders, and reduced criminal penalties for non-violent drug crimes [1].
As far as I know, oncologists are not fighting cancer research in order to protect their careers.
[1] - https://en.wikipedia.org/wiki/California_Proposition_5_%2820...