Yes, the Amish have managed in the USA so far, but I think that even those days are numbered. Just as many Amish already own mobile phones, though they limit their use and keep them stashed away most of the time, they will be forced to do online things, too.
I'm ashamed to admit I didn't think of this earlier recently when I needed some printing/scanning done. I went and bought a cheap hp cloud printing (they don't even come with cables anymore) abomination. After trying to get that to work, screwing around with HP accounts, configuring a cloud printer from a linux desktop, installing an app on my phone, etc I ended up going to the local library and got it all done in 30 minutes It was cheaper, easier and better option for something I need to do a few times a year.
This is smart though, since it costs very little to give someone a smartphone with internet these days (ALDI talk in Germany is 8€ a month with a bit of data, a cheap smartphone maybe 100€).
Trying to keep up a service that <0.1% of the population uses costs a lot more.
And by old I mean > 55-60.
The Internet isn't what gives meaning to life.