They can't price-differentiate FP64 compute out, since ML uses FP32 or even FP16. They tried discriminating FP16 performance but frameworks switched to using FP32 units and downconverting to FP16 after. They can't kill FP32 performance since that's used for gaming. They tried killing the virtualization, they tried differentiating based on clustering, they tried every reasonable technical procedure. So now they're falling back to legal means, to defend an artificial price distinction that has no reflection in card features that anyone cares about.