Intel can't even get there Secure Enclave secure on a single processor
If Intel can't get their systems secure just for a simple OS, how can we trust that they do their entire computation on your behalf, including a large set of services, in a secure manner?
Frankly, the concept is interesting but the devil is in the details. Moreover, it is just not possible for Intel to execute anything securely. Their bean counters will be pushing for higher speeds and will run over their security people.