You would have to upgrade the Windows license first. These ship with a version of Windows that only allows installations from the windows app store. To upgrade to a 'real' Windows license will cost an extra $50.
"You can upgrade to Windows Pro for free through December 31, 2017."
Highly unlikely, Valve have always said they won't pay Microsoft the 30% fee. Having said that it's been reported that Valve charges a similar fee on Steam.
what do you mean? it's not x86?
tankenmate is saying that it will only run applications installed from the Windows Store. Steam isn't in the store, and isn't going to be int he store, because they don't want to give Microsoft a cut of their revenue.
that makes sense, I bet it won't be that hard to crack though.
Yes, well it makes sense that Valve are not going to pay Microsoft 30% of every Steam sale via Steam installs from the Windows store as it'd mean Valve would get 0% of that sale themselves, and they're the ones who built the store and infrastructure up over a many years. Microsoft are just coming in at the last moment and hosting a very small Steam installer binary!