Comment by Joel_Mckay

The encrypted page memory manager hardware in some ancient Sun systems prevented a lot of these context isolation problems. However, the modern IT landscape chose consumer grade processor architecture and bodged GPUs as the cloud infrastructure foundation.

Thus, there currently is economic inertia entrenching vulnerable system design. I don't think there is a company large enough to change the situation anytime soon, as the market has spoken. =3

Rule #3: popularity is not an indication of utility.