Only Microsoft would come up with a new security feature and then intentionally and arbitrarily limit its availability to the most expensive version of their OS. This is the same company that thinks putting ads in the fucking file explorer is appropriate on an OS they charge hundreds and hundreds of dollars for.
While they sell this as something that protects against downloaded malware, I think this is going to be used a lot in software testing. We have lots of manual tests of desktop software that neads clean environments which is painful when e.g. comparing several versions side by side etc. This is great compared to running multiple full VM's side by side.