It would probably be some proprietary extensions in something like systemD. Increase the complexity to code about 10x to eliminate the small devs, etc. Nothing we haven't seen with the open doc standard, ActiveX, Java portability, etc.

You have to think more business like. Why extinguish Linux when every copy running somewhere can give you licencing income. Maybe they'll partner with redhat and provide them something that has to be paid. Unlimited possibilities really.