My own adoption to Win10 is pretty high, only one box left to upgrade. I'll have to resort to virtual machines for things, that I really, really need Windows 7 for.
The real-time Windows 10 adoption gauge @ gosquared.com shows one third:
That's pretty good, but not the number Microsoft guys are aiming for.
I regularily follow Mr. Gordon Kelly, a writer who publishes @ forbes.com. In December 2015 he wrote a piece with a title 'Free' Windows 10 Has An Expensive Secret. There he pretty much speculates, that Microsoft really wants to get to one billion (1.000.000.000) Windows 10 installations as fast as possible. Not giving away free upgrades to pretty much everybody wouldn't help in that. However, his post after Microsoft's May 2016 press release (Three Reasons Microsoft Stopped Free Windows 10 Upgrades) indicates, that even he gave up hope on prolonged free upgrades being available. I guess, they didn't want to get to one billion that bad. That's something Mr. Richard Hay @ winsupersite.com predicted last December.
It seems that it is possible to prolong your free upgrade offer by enabled assistive technologies. See Microsoft's blog post about that. But unless you do that, it's time to act on it or do some trickery after July 29th.
For my Windows 10 weeks, I'll be posting couple of articles what I did earlier this month with my various upgrades.