Yep.Unless WotC makes an offical statement in person (not some other 'we' stuff) that justifies further trust, the damage is done. I can't imagine betting my company on it in this situation. The trust is gone.
And there's very little they can say (that justifies further trust). Since we no longer believe in them.
Again, just about the only thing I can envision returning some trust, is if WotC would hand over the stewardship of the OGL to an open source entity, making it an ironclad deal that WotC would honor the OGL also for the future D&D One, and ensuring they could never renege on any deal in the future, no matter what.
That could bring back the trust.
Let that sink in. Doesn't seem likely, does it?