I'm almost impressed with what people willingly put up with.
Not here to eulogize over what I moved to, but I think it's important people consider why they're still using Windows. It's not your friend.
Despite its generally good quality (particularly regarding software and hardware compatibility, which is important for an OS), Microsoft's potential to innovate and monetize Windows further appears limited.
This plateau is common among operating systems, with hardware breakthroughs in the 90s and 00s sparking innovation in PCs and later in mobile devices. The same could be said about business computing OS innovations in the 80s and 90s. But now the OSes for all this hardware and purposes roughly meet customer and consumer requirements. So what more innovation could there be?
In response to this stagnation, Microsoft has to resort to adware and spyware to profit from the Windows franchise to extract further financial growth from the platform. They could probably earn a stable income from Windows for many years by just maintaining the OS in an ethical way, but "stable income" is not what tech companies are looking for, they are looking for infinite growth.