The same way as we protect those anti-internet or anti-electricity ?
Some cities have laws limiting cashless businesses, as one example of that.
That’s inclusive of have-nots too, alongside the aforementioned no-thank-yous.
We do protect them in some ways. People who don't want to use the internet should still have phone numbers to call, and they should still be able to go into a bank and store their money or cash their paycheques.