>Next step, certainly to outlaw most operating systems and older devices.

They won't have to.

Instead, they'll just make some new essentially mandatory tech which older devices cannot run – update or stop existing, societally.

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Phones and email already seem this way (i.e. "required") – from my perspective as an internet user whom doesn't use phone/email, personally. Nobody believes me when answering "no phone, no email" – free-est man alive - their loss is disbelief.