Covid made this very clear. Countries that limited price gouging had far less panic buying and far fewer actual shortages than countries that ignored it.

Far from "creating supply" price gouging is read as a signal that supplies are precarious and may run out at any moment. So buyers tend to stock up, just in case. The result is widespread shortages.

And of course generators are useless if they're >500 miles away. No affordable markup is going to get essential goods into an emergency zone if they have to be trucked a long way.

Bottom line is you're going to get much better results from organised community preparedness and intelligent collective response than from a few random spivs hoping to make some extra dollars.