Interesting, I didn't know that. Even if he stands to gain a bit from being able to get around apple fees, I think it's an interesting take to think of online app store fees as an internet tax. I'm not sure I would fully agree with that logic for something like Steam since Steam is designed to be used on hardware that Valve has nothing to do with, but I on the flip side between Apple and Google there is definitely an duopoly in the smart phone business that raises some issues, more so with Apple than Google since Apple does everything from hardware to software in house and more tightly controls their platform.
At the same time it's hard to deny that a company should be able to have fees on an app store for hardware they create. I don't think anyone would argue that Sony shouldn't be able collect a fee for selling games on PlayStation consoles, but I suppose since Sony has steep competition from Xbox, Nintendo, PC, and mobile when it comes to gaming, it's less of a monopolistic situation.
But then again, video game stores are more straight forward. They sell a product and the store takes a fee just like a physical store. In Apples case I think it's true that there have been situations where an app adds some kind of extra functionality that Apple wants to market themselves in some other way so they ban the app and do it themselves, and their ability to do that separates them from the rest I suppose.
If someone designed a good physical product, lets say... a better mouse trap, and they want to sell it in a store; if that store then decides to design their own high quality mouse trap and decides not to sell the other mouse trap anymore, the guy who designed the first mouse trap can go sell it at a plethora of other stores. When Apple does that to a dev, there is no where else for them to turn, they're just screwed.
Anyway, I didn't mean all of that as a reply to what you said Andrew, just using it as an opportunity to put out my thoughts on the issue.