Really the main issues were for those too young to remember. The banking industry was nothing like it looks like now.
Building societies were for mortgages really, and banks for bank accounts and investments.
Simple savings you put in building societies and hence they funded the mortgages basically.
You needed a relationship with a building society, start young, save regularly to stand a chance of getting a mortgage.
It wasn't just that price comparison sites didn't exist, you wouldn't have been able to get a mortgage from one of the other places you had no relationship with either.
The market was opened up progressively over time, without enough regulation.
General public only (as ever) saw the positives, missed the negatives.
So yes they were right they had trusted financial institutions, but they hadn't realised (some of them) that those institutions were changing.
It had been a highly restrictive, know your manager type environment, that was stale and not in fact great for many. (we don't like that Mr Smith, not sure about him, don't think we will lend him money to buy a house!. Now who is poor Mr Smith going to borrow from?)
When the deregulation came the banks swooped in and bought all the building societies (the 90s BS share boom for members). Pre this is was unusual to have a mortgage with a bank.
As odd as it sounds I am convinced people are more financially literate now. Not by a massive amount, but in general.
The opening up of the markets has forced more people to have a bit more knowledge, no bad thing.
People saying the compo given proves it was mis-sold are being very liberal with the truth here.
This was the first time of "mis-selling" and whilst for sure there would be cases of this, the industry was not able to provide any defence, there was no real record keeping of advice given and hence once a few really obvious ones won cases the whole reclaim industry started.
You can't fight a claim with no evidence.