It's not greed that has varied. It was an inflationary shock. Greed explains why it hasn't gone back down once the shocks are gone. It's basically price collusion - nobody wants to be the first to decrease prices, so nobody does.
Before the inflation, there wasn't an opportunity to collude in this manner.
drewcoo|1 year ago
The time before inflation? When was that? The middle ages?
smeagull|1 year ago
There has been a recent marked increase in inflation. That is the inflation I refer to.
Learn to read maybe.