Scalpers can't really be driven out of business because it's fundamentally just arbitrage. If an arbitrage opportunity goes away, they'll go away, but they'll come back as soon as the opportunity returns.

Even if the price moves suddenly and they're forced to take a haircut, the low barrier to entry means other resellers can enter the market.

Scalpers aren't a "business" in that sense. They have no fixed costs, so they can just ramp up and down as needed. Most of these scalpers are just dudes with a spare bedroom and some code they bought.