3 strikes and they're out.
If they screw up Windows 10, I reckon they can say goodbye to the consumer PC part of their business, such as it is, and it will seriously damage the confidence of the corporates.
The more user friendly versions of Linux, such as Linux Lite, are looking like a much more sensible and viable option every day. Been running mine both virtually under VMware for testing, and as an actual machine on an old netbook for some time. Upgrades and installing software are a breeze.