I think it’s quite a stretch for you to interpret the parent comment like that. Surely they’re referring to people’s entitled behaviour in this private space.

They're not "wishing" they're just "taking". And yes that's kind of definitionally entitlement.

A generation ago we didn't have public third places where people could plug in a desktop computer and printer.

I did, sort of, depending on what you mean by "public". My local pub provided a free desktop computer, my local library did too (and the librarian once allowed me to set up my own desktop), my community had two regular lan parties, you could rent the local hall for a pittance, and all my friends' parents owned houses with spare rooms or garages that they'd let us set up projects in.

I get that not all of these are strictly public spaces or places where you'd do office work, but it must suck to have nowhere better to go than a Starbucks.

Edit: even today, I think I could probably ask my local library and they'd let me, although someone might steal my monitor.