Not possible with a large global data set on a global network. They'll spend more money doing the grabbing than they collect in taxes. A circular economy makes it harder. We already have multiple DEX's on LN, Robosats being the one I use most often. And the LN doesn't even have Taproot channels, splicing, or a self-validating wallet standard. I don't see your concerns playing out directionally. That's the beauty of FOSS and having a base layer designed with the right incentives and principles.