That said, you develop legacy, tail, hardware and slowly approach the "head of the fish". But your company sells the "head of the fish", and that head is supported only via proprietary.
So hence your approach prioritizes following strategy:
1) you depend on proprietary, you cannot remove it - your selling of "head"s will stop - and hence support of whole drivers stops
2) your proprietary will stay more advanced than opensource, forever; see 1.
3) you will throw huge HR into segment that does not touch opensource at all, and is largely uninteresting for non-enterprise high volume consumers/retailers
4) you will never accomplish to utilize complex architectures seen on top models efficiently in opensource; because you simply lack human resources - which are gained only and only from selling of those cards
5) this means you are not interested in selling your cards to be used by opensource solutions
This goes completely different with intel. Intel prioritizes development on "head of the fish", and only then, if ever, tail. This gives exact the situation their legacy hardware is non-usable under linux, but they have fast pace open development with top-notch current hardware. I want to buy newest hardware and use it with opensource - this is why intels approach is better for me.
Even if I would buy "high performance by factor 200%" AMD APU, it will reach its "200%" performance only via proprietary driver, and even then it is widely known you prioritize directx way more than opengl.
So under linux, your "200% APU" becomes "50%" APU. Plus currently less efficient PM and performance per core ratio. This is why only intel stays within choice.
Of course, if id go high gpu performance way, it will be different - only because intel does not do high-performance gpu hardware. Then, we will have a clash between two evils of red and green.
Your directx love, shorter core packages (glibc,kernel,xorg) and hardware generations support window pretty much signs the decision yet again not in your favorite.
John, you are wonderful, patient, consecutive man; but its all about company approach, not charisma.
Lets talk about my recent purchases. Recent year I have purchased used 260gtx instead of hd57xx; brand new 560ti instead of 6970 for friend of mine; i3 instead of 41xx/A6. Total costs I think around 1000€. For linux hardware.
You see, linux people do go shopping and they shop for hardware which supports their OS.
It is common practice that companies detect market development and adapt early - not following after it is already too late or looking at outdated statistics or trying to influence buyers decision by forcing them to do what mass-market of such people does (because each of them is influenced with exact same approach recursively). You buy, because everybody buys, because such as yourself buys - so you have no choice but to follow. This is very very dirty society, it stinks with monopolies, I dont invest money there; I have my own head.