Competition is fine, but if one competitor can use it's ownership of part of the stack to chronically degrade the other's product, it's a problem. Nobody minds

Competition is fine, but if one competitor can use it's ownership of part of the stack to chronically degrade the other's product, it's a problem. Nobody minds Microsoft setting up a Windows store and trying to attract game devs to it. The problem is when they try to lock out their competitors out, somehow, using operating system functionality.