Quite possibly.

Windows 8 reached end of support in only 4 years.

Particularly if Microsoft thinks they can get away with “Operating System as a subscription” as part of “Windows 12”, then they may well be very aggressive about retiring Windows 11. The software companies are falling all over themselves to force people to pay monthly in perpetuity.

However, I’m thinking that Microsoft sees Windows as their gateway drug, so I don’t think they’d risk making the base platform subscription. They want people to still get “free” OS that nags them with “hey, give us money for backup storage, and you want office, right, and oh you are a powershell user I see? Then you’ll just love renting an Azure instance so we’ll advertise that as part of launching a powershell prompt?” They’ll of course continue the milk the OEMs for license fees offset by bloated “sampleware”, and still ostensibly charge for it to drive the perception of value, but broadly Windows is more a launching board for steering people toward Microsoft subscription services.

If they did throw the switch on “subscription for OS”, then they’d risk people just getting ChromeBooks which will steer the users instead toward Google Docs and Google Drive and all the other services Microsoft expressly doesn’t want users to get into.