Here's a secret: a lot of the featurefulness of AMD's current Linux drivers is not due to AMD putting in the work, but due to Valve paying people to work on GPU

Here's a secret: a lot of the featurefulness of AMD's current Linux drivers is not due to AMD putting in the work, but due to Valve paying people to work on GPU drivers and related stuff. Neither AMD nor Nvidia can be bothered to implement every random thing a customer who moves maybe a million low cost units per year wants. But with open source drivers, Valve can do it themselves.