No problem. I dont expect to see that happen. In fact I am hoping that the opposite hapens, and that US forex firms see a major loss in profit, and in addition to retail traders there is a enough pressure to reverse these absurd and facist policies.
Regulation of spot fx is important. Imposing standards like accredited investors, verifying experience/knowledge, determining suitable trading assets, requiring more information in risk disclousures, these are all things that would have a true positive impact on the market.
But it is not even remotely the government's place to tell me what I can and cannot do with my investment capital, provided I meet certain standards. Protection is fine, but a violation of choice is not.
The FX market, especially spot is unique. It cannot be regulated like any other securities market.