How did hospitals start? Greed? Not originally - but now there are surgeons who will rip people off. However, the vast majority do their job very well and for reasonable pay - some even volunteer to help the poorest of the poor eg: ORBIS:
ORBIS | Saving Sight, Blindness Prevention & Treatment, Help the Blind
How did schools and universities start? Greed? No -just because now a college education costs a heck of a lot of money doesn't mean the lecturers are greedy.
The biggest issue is Flight Safety and Lion Air have shown that buying lots of new aircraft does not solve the awful reputation they have with the FAA and EU.
Would you accept heart surgery from doctors who were paying to operate on you?