Nvidia can sit on their property all they want, and lose market share in result, while other GPU makers have no problem making open upstream drivers. That actua

Nvidia can sit on their property all they want, and lose market share in result, while other GPU makers have no problem making open upstream drivers. That actually benefits everyone but Nvidia ;) In practice though, that's likely the least of their reasons not to open their driver. More probably, they just don't want to expose some embarrassing code mess or non compliant cheating in their graphics stack, as well as don't want to allow anyone decide how to use their GPUs without Nvidia dictating them. If they control accelerated driver - they can dictate and demand more money in some use cases from those who want a more permissive driver. All of that has very little to do with intellectual property and more with market manipulation.