

You can get a very good idea of what works by just looking for AMD GPU cloud compute.
If it was usable and cheaper everyone would be offering it. As far as I can see, it’s still experimental and only the smaller players, e.g. IBM and Oracle are pushing it.









Bragging rights and improved sleeping ability from the knowledge that the devs are being supported.
The serious answer is it’s often easier for people in a company to buy a license key than it is for them to arrange a donation to the devs. So this is an easy way to make small donations.