TLDR: it's the system that's at fault, it's not fit for purpose to be used by humanity as a whole, it only suits a certain subset of us, and also tends to reward rather than punish the less scrupulous.
The thing is, some folk (in business, government and here) make the silly assumption that everyone is equally capable and comfortable dealing with financial stuff - and that simply is not true. Some folk by mindset are poorly equipped to deal with the kind of shennanigans that companies get up to with their customers, and I'm one of them.
It's long been an annoyance to me that the world doesn't expect everyone to be an IT expert or a scientist, because it DOES expect everyone to be a salesperson and an accountant. But apparently the salespeople and accountants couldn't possibly get their heads around that techno-sciency stuff - everyone has their own strengths, after all! Which is a perfectly reasonable standpoint. But suggest for a moment that maybe not everyone is capable of being a salesperson or an accountant, and all one gets is, effectively, a sneerily delivered "suck it up sucker!" in response. Which is emphatically not a reasonable standpoint.
Why should I have to expect to be a victim of unscrupulous companies? Why should companies being unscrupulous not have to expect to be severely punished for it? And why should salespeople and accountants not have to expect to be well-versed in science? Yes, I know - there's nothing in the economic system to enforce - or even encourage - ethical behaviour on the part of companies, quite the reverse. But therein is the fundamental flaw of the whole economic system.
As for salespeople and accountants - well, it just so happens that the economic system we have favours their mindsets, rather than mine, it's not necessarily anything to do with intelligence nor of understanding the impact that finances have on ones life that separates them from me. It's mindset, and that's not something that can easily be changed much if at all.
And just as I may feel frustrated that some who deny the problems of climate change and ecological collapse, or who seem to just try to ignore it in the hope that it'll magically just go away just aren't really trying hard enough or aren't willing to understand, so I know that some seem to think that I'm just not trying hard enough (not true - I've had nervous breakdowns over trying to get my head around the insanities - to me - of finances) or are stupid because I can't handle stuff well that they deal with on a daily basis (just as they can;t get their head around stuff that I deal with on a daily basis, funnily enough).
Just as some folk can only get their heads around the most basic science, so some folk can only get their heads around the most basic financial stuff. Expecting the latter to play with stocks and shares and keep an eagle eye on contracts is just as daft as expecting the former to set up good science labs.