Or doctors see their profit-margins / wages declining, and lower the threshold level for various kinds of specialised testing. So, you complain about a mole or

Or doctors see their profit-margins / wages declining, and lower the threshold level for various kinds of specialised testing. So, you complain about a mole or a lump, and instead of a quick diagnostic poke and an "It's probably fine", it's off for an invasive biopsy, "Hmm, the results were inconclusive, better safe than sorry" surgical removal, and maybe a few extra scans for follow-up. I'm sure that there a many areas where a GP would like to schedule a follow-up, but can't justify it on the current evidence, and lets it slide. Because there's this level of subjectivity in medicine, any increase in supply can easily be countered by the suppliers pumping up demand, keeping D/S exactly the same. (I'm not a doctor, although I'm friends with a few)