If you are talking about Europe, the catch is that they weed out those who shouldn't be there early. For example in Italy, everyone can go for the first year, but then you have to pass a continuation exam, that upwards of 50 to 70 % fail. Germany has a similar system with exams early in high school that separate what tier school you can go to (trade schools or universities). As far as I know, once you take the test, your fate is sealed. So sure, its "free/low cost" but and technically "universal", except for those who fail at the gate. Otherwise try your luck in the US where you can rack up massive debt to attend any for profit college with 90% acceptance rates and the piece of paper is accredited the same as any other college.
Incorrect. Most of Europe as well as Canada spend less money, on average, per student as the US, have universal systems, and are (very) high quality.