....has absolutely nothing to do with these situations and no bearing on the rational discussion of them.
Finance is a two way street: a provider of goods or services, and someone who enters into a contract and exchanges money for those goods and services.
So long as it is free an uncoerced, that transaction is free of moral or emotional baggage.
Ultimately, the whole idea of "greed" having any bearing on these transactions is a bunch of illogical, emotional ridiculousness.
Nobody is forcing anyone to buy airline tickets and enter into these contracts. Those that do, do so of their own freewill and willfully accept whatever contract comes along with it. People are free to not buy tickets and enter into contracts they don't agree with.
No f's given for people who abdicate their personal responsibility for due diligence when entering into contracts.