Call it amnesty. Call it common sense. Call it whatever you want, but Microsoft's decision to upgrade all Windows users in China to Windows 10, even if they're using pirated versions of Windows, is a clear sign that the operating system is dead.

No, not dead as in "doesn't matter," but dead in the sense of "not something anyone sells."

Microsoft is now giving away Windows 10 to "re-engage" with the three quarters of the Windows users in China who pirate Microsoft's software. It's doubtful that Microsoft will ever manage to sell them a copy of Windows, but it may lead them to purchasing other software services through Microsoft. That's the plan, anyway.
Microsoft gives up on charging for Windows in China - TechRepublic