To be fair, Microsoft is still doing it (maintaining several revisions through security and bug fixes) with Windows 10 and Server 2016 and priors, it's just not

To be fair, Microsoft is still doing it (maintaining several revisions through security and bug fixes) with Windows 10 and Server 2016 and priors, it's just not visible to customers outside enterprise. The change is the expectation for your typical consumer or small business user, who are now used to everything updating and obsolescing periodically. I don't like this attitude either, though. Developers have gotten fat and lazy not dealing with any sort of variation in deployment, let alone versions. Everything is all Android or iOS. All Chrome and maybe Firefox. x86 or ... maybe arm. And not be connected to the Internet? That's unpossible! With hindsight and better tooling we should be able to handle more complexity in how products are used, not less.