All this OGL business is too inside baseball for the vast majority of players to care much about and the D&D brand will remain a goldmine even if the game itself suffers. Even if large scale 3rd party content shrivels up and dies, the first party content and free or small-time 3rd party content will remain legion (publishing on DMs Guild will remain an appealing way to dip ones toes into 3rd party content creation) and most people really only need so much content made by other people before they move to homebrewing their own. It all seems like the world is falling to those of us plugged into the D&D-oriented web forums and social media, where D&D news is closely followed and 3rd party creators and their friends and allies tend to be present and active, but the bulk of players do not really have that relationship with the game. Half the people I play with who were vaguely aware of the situation dismissed it as just another internet controversy. And a company can easily get by shedding a large number of customers if the remaining customers are better exploited.
Which is not to say this isn't a big deal, or that it won't impact WotC and Hasbro's bottom line or do long term harm to a very strong brand and customer good will towards the brand and companies. It's just to say that I don't see the damage materializing in a way they actually meaningfully respond to in the near term. The long term damage will come when, out of the manifold existing and soon to be created challengers to the D&D crown, one or two games gain momentum in picking up the business and 3rd party relationships that WotC has so callously thrown away, acquire widespread appeal for their own brands and WotC's ability to function (and profiteer) like a quasi-monopoly dies.
