I live in Canada, and I don't know anyone who lives here that doesn't have a data plan of some kind, although I'm sure they definitely do exist and there are definitely people without a ton of data.
Really? I don't know many university students that don't have the latest smartphone(or at least a fairly recent one) which usually implies they have a data plan of some kind since most of them don't have $800+ to pay outright.
But to be fair at my university there are also a lot of students that drive brand new or fairly new cars too and I've parked beside too many Porsches the student parking lot.