They do, through second order effects. Read up on them.
> Customers don’t care.
Of course we care. We get attached to the brands we buy and value the services and products they provide. And most of all we care about reduced competition.
Why do we care about "competition" when it's ultimately all about the user experience? The streaming market has a surfeit competition right now and customers loathe having to juggle between half a dozen different services just to get the content they want to watch. In that space, some are even yearning for a return to monopoly, or cable.