Re: What's next for Windows 10?
> I don't see how ...
No, you don't, but never mind.
> go back to paid versions of Windows 10 after the free period.
I wasn't entirely free. You had to have paid for Windows 7 or 8 previously, and it wasn't free for enterprise.
> Difficult for an OEM to create a $300 PC and stay afloat when MS is asking for $199 for
That is easy, MS don't ask OEMs for $199.