Good luck with that.
The sheeple immediately cry foul, saying it's price-fixing. Then, every 5 or 10 years, some deeply-caring politician will launch an investigation of one sort or another, vowing to "get to the bottom of it."
The result is always the same. There is no grand conspiracy. Rather, they all keep an eye on the competition and, when one makes a move, the rest react accordingly, either with a price war or, more often by price-matching (which is perfectly legal).
All of them at the same time, with no collusion.
“They all decided to set minimum prices at the same time, but there was no collusion. “
Cowinkydink? I think not.
I hope that these medical companies enjoy the heck out of rolling in it while they can, because this and the recent outrageous drug price increases just provides more ammo to single-payer.