Bitcoin is the undisputed King & always will be. Most alts don’t even have an independent price path, they go up when bitcoin goes up & they follow bitcoin down when the King goes down. In my opinion no alt will ever flip bitcoin.
Never say never, there is one thing that's certain in crypto space and that's 100% manipulation, we don't know what will happen in the future but now bitcoin indeed look like it's impossible to flip but anything is possible