Or rather, a doctor studies his brains out, takes out 200K in loans, graduates med school, interns, and then takes out more loans to start his cancer practice. Next door to his office, someone opens a competing cancer treatment practice using chicken bones, strands of the patients' hair, and other voodoo. Both people run TV ads, only the second guy floods every advertising venue with many, many more.

You can't seriously expect the guy opening the first office to not take direct intensive action.