I'm not going to worry about this.
A couple of things will happen, I think.
There will be a sudden rush of panic buying.
Things will settle down, and then there will be a supply but it'll be much more expensive. Those that can afford it will continue to buy it, so the supply will be there.
Others will choose to go on Ozempic or Wegovy. At some point, the tablet form of GLP1 will be launched.
There will continue to be a black market in Mounjaro. It was ever thus.