Frontrunning gets you a worse price for your trade, so traders would naturally avoid exchanges which practice it in favor of others which offer a deal. There is

Frontrunning gets you a worse price for your trade, so traders would naturally avoid exchanges which practice it in favor of others which offer a deal. There is no natural monopoly on crypto exchange services, though regulation does tend to raise artificial barriers to entry and promote centralization. The "GME level fiasco" was only possible as a one-time event. You don't get situations like that on a recurring basis because the market adapts.