KittySlayer
Grandmaster
Coming from an IT professional standpoint.. the forced upgrade will break a lot of systems. There are systems out there that are still running legacy drivers and are running software that won't run on anything but specific versions of an OS. We had a client that was still running software that would only run on winXP simply because it was custom software and they could not/did not want to afford to have someone build new software to do the same thing.
Forced upgrades of legacy software or hardware are one thing when it is your house. So I have to spend $75 for a new scanner at home, annoying but not the end of the world. For a business multiply that time 10 seats... 100 seats... 1,000 seats and it adds up fast. Not to mention someone from IT has to touch everyone of those machines as most users are not bright enough to plug in any component without calling IT.
Custom made legacy software can be very expensive to reprogram and purchased legacy software may no longer have a company supporting it to program upgrades.
Corporate systems are outside of Microsoft's forced march upgrades. This is due to their centralized policy controls. The no-choice upgrades are for home users and small companies that do not use Active Directory.
Be sure to keep an eye on this and look to an IT professional that knows your system and knows what they are doing. Initial reaction was our business was safe but now maybe not. Still researching how we are impacted.
It appears MS has reversed their stance on this and with the re-classification of W10 from Optional Update to Recommended domain joined W7 Pro PCs may receive the W10 update automatically if three things are true...