>>16275121They'd lose nothing, it's not like there are WWE fans that would leave them after being exposed to AEW at this point. WWE is mass-market and AEW is niche, and they both like it that way.
They would both benefit from talent exchanges, and I'd argue WWE would benefit more. A Jon Mox return to feud with Roman is gonna boost sales by virtue of WWE being mass market. A Cody return would turn heads but have nowhere near the penetration because it's inherently niche.