See, that's the thing. You are not forced to use only iPhone. There are Android as an option, and they are offering more phones at better prices. Competition.
I never said, nor implied, that I was forced to use an iPhone.
I explained how, given a computing platform, consumers benefit from having multiple store options. You used Steam as an example. I explained how PC users ultimately win by having Steam compete with many other options. If PC's were locked down like iPhones are, we would not even have Steam as an option. Or GOG. Or Epic. Or Humble. We'd just have Microsoft.
Yes, I do have a choice of phone operating systems. That does not limit my ability to criticize bad decisions by one option or the other. I can criticize Samsung for selling a phone that had a propensity for catching on fire. I can criticize Motorola for bad cameras. I can criticize Apple for locking out other stores. I can vote with my wallet AND my words.