BTW, thanks for the very interesting history lesson.
Actually, I think you will find that, even with the inflated tuition charges for international students, a Canadian university education is still quite reasonably priced as compared to paying full freight at an equivalent top private US college.
I know that Canadian friends of mine who have lived and raised a family in the NYC area for the past 15+ years, are planning on sending their 3 children to top schools in Canada for reasons of economics. Similarly, we got to know two prosperous American couples from the East Coast on a cruise, and they indicated that they as well as all of their extended family members went to McGill for their educations. Carpet-baggers!
[In my graduating class
(many years ago now), there actually were several students from other countries, including the US, Bermuda, Hong Kong, China and Europe, too.]
But in addition to potential cost advantages of schooling in Canada vs US, part of the problem Americans face in attending top US schools--exacerbated by those lacking legacy or athletic recruit status--is that it can be akin to winning a lottery merely to gain admission. This is another advantage to considering top Canadian universities. McGill for example, is very well regarded and highly ranked internationally relative to many very good US schools. As a result of the different admissions system, anyone with marks in the high-80's will be able to attend if they wish--no essays, SATs, insufficient hooks, ethnic status, or other subjective assessments complicate your chances.
You are right in saying that Canadian universities don't specifically value internationals (nor any other geographic, ethnic, demographic, economic or psychographic distribution) in offering admission. Nor do they discriminate on those bases. They value straight marks alone. If the students with the best marks applying all happened to be girls from China, the entire incoming class at that university would all then be Chinese girls
(well at least in the short term until the public revolted and got the government involved).
So, Canadian universities might very well be worth considering for some US student athletes from families not eligible for US scholarship/financial aid, and with good marks.
IIRC, I believe a couple of US hockey players have signed NLI's to St. Francis Xavier for next season. St. FX is a very highly regarded school in Atlantic Canada according to the MacLean rankings (Canadian equivalent to USNWR) with a highly ranked hockey program too. I have also seen a few Americans listed on some of the other Canadian school hockey rosters previously (but very few to-date). So it certainly does occur.
For the record too, many of the Canadians who go to the US for school end up staying in the US either because they got a job there upon graduation and/or met an American and then got married
....my niece was one of them who did both. This, by the above-noted definition, of course means they aren't then carpetbaggers at all.