There is an old saying in military circles, "never interfere with an opponent determined to destroy himself..."
I'm not so sure that it won't be very, very good for the rest of the fantasy gaming industry to divorce itself more fully from D&D and WOTC. I suspect that as a business practice this should have happened long, long ago, and that it may be extremely fortunate that WOTC is forcing the issue through their business practices because now many competitors have good incentive to make a complete split.
To become innovative in a radically new and productive way. To relieve themselves of the D&D model and instead pursue better potentials. D&D was like the "first production model Ford." That does not mean it should be confused with being either the best automobile, or with what an automobile should naturally be like.
And as for me I'll be buying, in the future, from everyone but WOTC.
And I suspect that will not only improve innovation, creativity, and experimentation away from the "tied at the hip to the D&D model" evident in so many other companies, it will also help support companies with a better vision of the future.
Let the most innovative thrive and let those so determined die by their own hands.
That's the way real progress happens.