What?
They have announced their intention to repudiate the license that the OGL industry and community work off of.
The announcement of a thing is not the thing itself. The intention has not been made reality.
This has taken away the supposedly irrevocable safe harbor of the industry that the industry relied upon.
Not yet, it hasn't. Like, today, WotC cannot walk into a court and sue anyone for using an unauthorized license, because that license
hasn't yet been de-authorized.
Indeed, I expect a bunch of 3pp have seen an
uptick in sales for the moment, while WotC has likely lost revenue over this. So, those 3pp would have a hard argument that they have taken harm yet.
The industry is reacting, many are moving away from OGL and support for D&D. Industry people are sweating this heavily. Projects are being delayed as this new active legal threat is evaluated.
Risk management is a cost of doing business. Short term, the need to do risk management isn't usually considered direct harm.
In business, harm is usually calculated well after the fact. If, a year from now, Paizo is selling their new ORC-licensed game like gangbusters, raking in the dough, they'd have a hard time making a harm narrative stick.