Well to be fair, the failure is on him.
He got one of the BIGGEST, if not THE BIGGEST pushes in RAW history, he got the world title within like 6 weeks of his RAW debut. He wasn't over or a top worker at this time, he was just an average performer. He then got high profile fueds from everyone to Cena to HHH and they ALL put him over with legit wins under his belt. He's won multiple world titles in his first few years, got high profile WM matches including winning the title in record time against Daniel Bryan and to all this and STILL not become a draw, something is wrong and he doesn't have any classic promos or matches to his name, on paper it looks like he wasn't worth the push he got.