No thanks
I have very little faith in a legislative solution here since I believe politicians care about browsers, not browser engines. They see Chrome, Brave, Vivaldi, Edge and Opera and see a diverse marketplace with sufficient browser competition. They don't seem to care about the technical monoculture behind it all.
They need to wrap up the DOJ lawsuit against Apple, but I fear the current administration will look the other way because "Tim Apple" gave the guy in charge a golden trophy. I wish I were joking.