I went in the 80s and had my fees paid by my LEA and a full grant
I did too, but I still worked alongside my course, and yes, it was a course with some placements and long working weeks, and, at that time, I was in all day every day, unlike most courses at the moment.
parents didn't used to pay to the extent they do now
No, but students in the 80s didn't expect heating, let alone en-suites. They certainly didn't spend on take away coffees, Netflix, huge mobile phone contracts, and all the other things our dc take for granted. I don't recall any of the many, many student houses I visited not having condensation, a bit of mould, and usually in poor repair generally. I couldn't believe the 'poshness' of university accommodation when we first started looking round for my dc.
Some of the amounts you read about parents giving their dc on MN, and on WIWIKAU are vast, often 2 - 3 times what my dc have from us.
Don't forget once they leave home, you do find your own grocery bills come down considerably, as well as less washing, fewer showers etc etc, which will impact on your utility bills (and water if on a meter), and your petrol if you give them lifts at the moment.