Yes similar, some time back I was in a grad program that I was really interested in and decent at, but by then married and child on the way. My Master's adviser was honest that it's better to just work somewhere vs go down PhD path as I was doing this for the job prospects. The folks who stayed with this were "family-funded" and well to do in their home countries. They basically were doing it for various reasons aside from "I need a job".

I knew a foreign student like that. He was a great guy and a friend, and we worked in the same building. One day, I told him that I purchased a condo to save money during the doctoral program (in my unique situation, my mortgage was less than basically all other grad student's rent, at least those I knew). A little while later, he told me that he also purchased a condo. I asked him about his mortgage rate, and he gave me a puzzled look. His well-off family paid >$250k, cash, for his condo.

In general, pursing a doctoral degree requires a certain degree of financial stability. The successful doctoral students usually came from wealthy families, whereas the ones who struggled the most also struggled with finances. I believe it's essentially impossible to perform truly novel academic research when your personal finances are volatile. I also firmly believe that graduate student unionization is an elitist mentality that must be unilaterally opposed, as it is guaranteed to destroy any constructive academic culture.

While I was in uni, one of my friends was a young woman from a conservative East African family. She was pursuing multiple degrees and multiple majors. She got accepted to our school and it was the first taste of independence and freedom for her. Once she graduated she was culturally expected to get married and have children right away. Careers for women were not common. So as long as she was in school her family paid for it. We lost touch but I like to assume she is a multi-hyphenate post doc by now.