If you want physician salaries to be lower, you need to lower the cost of becoming one. It's really as simple as that.
People like to make comparisons to physician salaries in other countries but ignore the fact that the education is significantly cheaper or even free in those countries.
Additionally, the US forces newly minted medical school graduates into a forced regime of working for 3-10 years at minimum wage to get qualified as a doctor (ie medical residency). During that time, their debt balloons from $300K+ to $500K+ because many residents can't afford anything more than minimum payments.
And if that wasn't bad enough, there are increasingly gap years built into the system to make you more competitive. This could be a Masters (and more debt) or practical experience after undergrad to get into medical school. There is an increasing need for a "research year" after medical school to get into competitive specialties.
So you might be 38 years old and have spent 20 years studying post-high school by the time you are earning those big bucks and you have to recoupe maybe $700k+ in debt.
There are negative societal outcomes for a high cost of education. Just like there are for housing. Yet people want to gatekeep both for some reason.