Point was just that having the "price on the tin" is irrelevant to whether there's price gouging going on.

But, I guess the argument could be similar to the case against Apple for its iOS App Store: there are lots of competitors, but the lock-in arguably creates a market definition of Apple customers. AWS customers are largely locked-in and at the mercy of AWS prices.

That's the argument. I'm not sure I buy it, but it's one perspective.