[protomyth]

Most low-end printers are not wi-fi enabled. I am assuming that people not buying a computer are probably going to buy a cheap printer.

[rimantas]

Some already own a printer (and another computer), so sharing can be enable via that machine, instead of talking directly to printer.

[protomyth]

If they already own a computer, then they don't need an alternate way to sync. (see ajleary's post that started this thread)