They are still conceptually different operating systems. There are users who are unable to upgrade because their hardware is deemed incompatible, and when Windows 10 support ends they will be left without updates. Microsoft no doubt have reasons for this, probably some good and some bad, but ultimately this is not the same as the “Windows as a service” that was sold to customers when they paid for the licence.
About the hardware compatibility, it’s the same as any other software as a service, at some point you might need to upgrade your hardware in order to continue being able to use the software.
They are still conceptually different operating systems. There are users who are unable to upgrade because their hardware is deemed incompatible, and when Windows 10 support ends they will be left without updates. Microsoft no doubt have reasons for this, probably some good and some bad, but ultimately this is not the same as the “Windows as a service” that was sold to customers when they paid for the licence.
About the hardware compatibility, it’s the same as any other software as a service, at some point you might need to upgrade your hardware in order to continue being able to use the software.