So do you think that surgeons should be able to strike, when other people's lives depend on them!?
You have to remember that in a well working labour market strikes are a last resort, and 99% of the time having a strike as a tool helps the labour side wield their fair share of collective bargaining vs the dominant position of the employer organisation.
This stands in stark contrast with the USA where the AMA calls the shots. In effect, the doctors control the supply of doctors.
Simply increasing the number of medical school places would result in many people spending years of their life (and in the US, 100s of thousands of dollars in debt) without then being able to then start their career.
Some degree of central planning seems reasonable here.