I can do neither, actually. I can merely observe reality as it is and look at which forces affect the direction of the world. And right now, I observe a reality where one of the most significant forces which counteract a completely Chromium dominated web is Apple's user-hostile insistence on preventing browser engine competition on iOS.
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.