Also an ENTERPRISE version of the software in any case is going to be used on widely different machines so limiting it to 1 makes NO sense whatsoever.
Many companies standardize on a limited number of desktops. Also, the majority of OS testing is to ensure that the software works with internal company software and processes. These don't typically change or aren't impacted in any way whether it's an HP, Dell or Model 1 or Model 2.
Most business enterprises do not have Technet subscripts to test with anyway. We either use our Volume License software or our MSDN copies. And during all testing, they simply aren't activated.
My company doesn't own a single subscription to Technet. But we have over 30 copies of MSDN with Visual Studio Ultimate. I think those are like $12,000 each. So, nearly $350,000 for that with renewals of nearly $4,000 a year for a yearly cost of $120,000 a year.
I still don't see the reason that eval software would have to be activated. I think it's more the nature that a home consumer simply wants to use their Technet subscription as a cheap mechanism to license all of their own personal computers. And as I've said, that's not the purpose of Technet. Never was.