But either way, since you mention the US, it's a very common experience for American exchange students in European universities that in America they learned to expect much more handholding and pampering than it's provided in Europe. There is more individual attention from faculty to students, there are all kinds of counseling and guidance services that basically nudge them through the whole thing, reminding them of deadlines, explaining processes etc.
The support you are talking about with American students I think is a symptom of the cost of higher education in the US. If you are paying $50,000 a year, you're going to expect that the university will do most of the work for you, and honestly, I think that's fair.
Many American students have the attitude of "I paid for the degree, so give it to me", which I cannot fault them for, due to the ridiculous price tag and societal demand to get a bachelors.
In Argentina, on the other hand, where education is free, the attitude among the professors is "if you don't learn this material, you won't pass". I find that very refreshing and more of how an institution of education should actually operate.
I am more concerned with the research institution's effect on undergrads rather then grad students. Grad students have their own unique ways of being exploited.
I happen to be very close with the dean of arts and science of a major state university. He told me that all of his professional goals given to him by the president and provost had to do with research impact, while 100% of the money he was allocated came from student tuition. The incentives are completely out of line and the students are the ones who pay the price.