So much of the current tech companies derive at least part of their profits out of restricted interoperability. A legal precedent allowing adversarial interoperability would be the death of any "engagement"-based business model, aka most of tech nowadays. Alternatively clients would pop up left and right that will strip out all the "engagement" nonsense (as well as the spyware/malware), and those will no longer be stoppable by legal trolling.

Such a move would completely kill off VC's (already sick) golden goose. They would lose more than what they'd win.