Even a bad WoW is going to make them more money than the best version of a TTRPG ever could.
Publicly-traded companies exist to make money; if this path could make them more money they're basically obligated to do it.
I get Matt's despair here, though I remain hopeful that this isn't actually what they want to do. That they'd like to keep the RPG going strong, instead of sacrificing it on the altar of their other monetization schemes. But I certainly don't know that this is what they want to do.
And, it's still possible that whatever their scheme is crashes and burns. Hasbro's been pretty great about entirely falling on their own faces with most of their portfolio.