miners are getting greedy FORCING people to pay fee's.
some users are greedy REFUSING to pay fees for the miner's work. It takes time to add a transaction during which the miner is idle. It does not take much time, so the fee can be small and is small (less than 10 USD cents).
miners are running the payment system for personal gain.
Uhm, yes? Miners do what they do to make money. Why is that surprising?