Internet connections cost poor people nothing in 1970 because they weren't necessary and could happily live their lives without one. The real item we're looking at here is *communication*, which was cheap: the stamp you needed to send in the form for your taxes cost a few cents. You could get away with using payphones for the few phone calls you absolutely needed to make.
In 2021, internet connections and cellphones are both expensive and mandatory if you want to participate in modern society. Your minimum wage job probably texts you your schedule, so if you don't have a cell phone, you can't even work. Many government forms have been moved online, with legacy options either unavailable or poorly services. Payphones are all but gone. If you're lucky to have a local library then maybe you can get some time on a decrepit computer with slow internet access, but the majority of the poor rely on their cellphone for internet access.
In 2021, internet connections and cellphones are both expensive and mandatory if you want to participate in modern society. Your minimum wage job probably texts you your schedule, so if you don't have a cell phone, you can't even work. Many government forms have been moved online, with legacy options either unavailable or poorly services. Payphones are all but gone. If you're lucky to have a local library then maybe you can get some time on a decrepit computer with slow internet access, but the majority of the poor rely on their cellphone for internet access.