Years ago, i had theorized that MS might turn Xbox into an emulation layer and just merge it into Windows as an icon, as it is the easiest way to do it. But then we hear about how Play Anywhere is hitting trouble as 3rd party studios started to resist giving away their PC licenses to Xbox because they want customers to double-dip. Back then I had assumed that Play-Anywhere was going to become the default, not knowing it hit a snag. Without Play Anywhere growing the Emulation Xbox BC couldn't legally happen.
And then last year was when we first heard about the Xbox-in-a-chip that will do the BC for Helix. The chip is the expensive way to BC, but we had precedence with PS2 hardware emulation of PS1.
In the end, the legal barrier that require Helix to be called a Console can be directly assumed, because of the "Play Anywhere" game label. Any Xbox game that isn't explicitly "Play Anywhere", is by definition "Not Play Anywhere". And the place they are not suppose to be played is on PCs. QED Helix is legally called a Console by marketing.