[smeagull]

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]

> Before the inflation

The time before inflation? When was that? The middle ages?

[smeagull]

> an inflationary shock

There has been a recent marked increase in inflation. That is the inflation I refer to.

Learn to read maybe.