WWE has seen lots of competition over the years but WWE somehow emerges as victories. When AEW made their inception, it was considered as an another wrestling company, but nobody would have expected AEW to become a worthy competitor for WWE.
Eric Bischoff recently in his “Strictly Business with Eric Bischoff” podcast talked about how AEW capitalised on WWE’s success
Tony Khan had one unique advantage that MLW doesn’t have, or anybody else — he had a hundred million dollars. He’s got an unlimited budget. He’s not accountable. It’s a really, really, really well-funded hobby. And that’s not a negative. […] It’s not a “do or die” situation for Tony Khan. This is his passion
AEW isn’t contributing. AEW is taking advantage of the success of a WWE, for example. It is because there is this company called WWE that is worth nine billion dollars that makes executives in the industry go, ‘Hm, we might be able to be worth nine billion dollars, but we could be worth a lot because the market is here.’ WWE has established a worldwide market for this product, more than anybody else. If WWE would have been in the tank four years ago, and would have been flatlining and not selling out arenas, and just stumbling through pay-per-views, do you think Turner would have jumped on AEW? I don’t.”(H/T: RingSideNews)