re-read your statement and substatute nVidia for Intel.
now think about the state of video support on Linux
also remember that Intel makes a lot more than just CPUs, they have network cards, video cards, sound cards, etc. each of these needs a driver team at the very least.
In some areas (networking for example) I think they just pay driver development teams.
In other areas (Video for example), they not only pay driver developers, they also pay developers to work on the underlying subsystems to implement new features and better take advantage of the capabilities of the chips