Wayland support fiasco, changes in driver's EULA to deny the usage of consumer-grade GPUs in VMs are 2 things off the top of my head.
There was actually some period of time when the Tegra division (I think) contributed to Nouveau a bit (!) but that didn't really grow into anything good.
> changes in driver's EULA to deny the usage of consumer-grade GPUs in VMs
Which changes? Where? I'm looking at said EULA right now and I don't see anything related.
My bad, it was a silently added "feature" in Windows driver[0].