The best way to fight anything is to first understand what you're actually fighting, and most people whining about scalpers and bots don't seem to understand what a "scalper" actually is or can be.The best way to fight the scalpers is supply the majority of your stock to the brick and mortar stores. Shoot even work with new distributors that haven't typically carried tech stuff before. As long as we rely on internet sales for this stuff were just putting it on a silver platter for the taking.
A scalper is anyone and everyone right now, meaning even any single person that gets a single item and realizes "I can sell this and make a profit". Scalpers are not exclusively volume purchasers with bots. Therefore no matter what purchase limits anyone tries to put it place, the "scalping" phenomenon will exist exactly the same as long as demand exceeds supply.