Businesses (large ones anyway) tend to buy Windows Enterprise which only available through volume licensing. Technically the free upgrade is not available for W

Businesses (large ones anyway) tend to buy Windows Enterprise which only available through volume licensing. Technically the free upgrade is not available for Win7 or Win8 Enterprise (fine print on this page: http://windows.microsoft.com/en-us/windows-10/about http://windows.microsoft.com/en-us/windows-10/about). But if the organization always pays for Software Assurance, that includes upgrades for all covered licenses. In my experience I see smaller businesses just purchasing hardware with OEM licenses (usually Pro).