Might as well double down on an inflammatory pitch like this in the intro, but AEW isn't even that special in this regard: the WWE empire was built on the ashes of others with New York money.
The Golden Era of the 1980s was shaped by the stars, voices and soul of the American Wrestling Association. When it rusted, the WWF floundered commercially and, albeit with an electric in-ring, barely proceeded onwards with the passé old glory aesthetic under the New Generation marketing slant. When it failed, the company looked to WCW and ECW, and there they found the antiheroes, onscreen power structures and ultra-violence that converged to form the Attitude Era. Latterly, after no-selling it in disgust for years, WWE embraced, a bit, the personnel and style of the independent circuit to drive its modern output.
You know, WWE is a bit of a scientist itself, and Tony Khan's formula is the latest it has bottled to craft its programming.
Nobody owns a trademark on any of this. AEW is basing a huge upcoming angle on an old RAW Guest Host skit and wouldn't exist as it does without the influence of Mid-South Wrestling, Jim Crockett Promotions or New Japan Pro Wrestling.
It's just funny, isn't it, that the pissant company has somehow managed to come up with so many good ideas!