[kbenson]

I'm not familiar enough with the specifics of anything Valve/Steam might be doing, but I don't think they're necessarily anti-competitive (at least not in the same way Apple is). One way to think of this is that it doesn't take Steam being bad or anti-competitive to still have people benefit from alternatives and competition, so we can all be happy about more competition to Steam.

Apple, on the other hand, does many anti-competitive things to do with locking people into their whole ecosystem, such as restricting their software to run on their hardware (and their hardware to run with their software in the case of phones), and their store to run on their software, etc.

It's not so much that they have a walled garden, but that the garden is within a walled city and the city is within a locked down nation with mostly closed borders.

If Steam is anti-competitive (I don't know, perhaps they are) it may be best to note how, especially if you going to equate it to Apple's situation. Otherwise, people will likely see and focus on the ways they are different and/or think Apple's situation is similar, when it may not be.