#3 Working with top tier talent

There's an old adage in pro wrestling that you're only going to look as good as your opponent can make you. It's certainly true that it takes two to tango, and it takes at least two to make a good, compelling storytelling pro wrestling match.
While Kenny Omega could no doubt make a ton of money joining the WWE, he might end up booked into programs with relatively green talent, such as Braun Strowman, or wrestlers who only work part-time, such as Brock Lesnar. He might find it difficult to be the Best Bout Machine in WWE under such conditions.
But in All Elite Wrestling, with its emphasis on in-ring action, he is much more likely to be paired with wrestlers who are closer to his skill level, men who are likewise interested in putting on a performance that transcends entertainment and becomes art.