>>15586758His look and gimmick are the sort of thing Hollywood hates. I can't find it but there's an interview with Billy Bob Thornton where he talks about this, just the absolute never-ending abuse you take for even being perceived as slightly country/redneck/white/whatever.
He's also not as conventionally attractive as Dwayne (no homo), he was a real pain to work with in wrestling and was probably a pain to work with on set, and his wife beating probably gives directors pause. They fired the MCU Kang for it after having already built up a whole bunch of shit for him, despite looking like George Floyd, so its easy to imagine that something like that might be a block for casting in most projects.