Yes, we have many ecosystems, and there comes a point when you say: "You know, I don't need to add another launcher, I can skip that game."
I get it, just saying most people don't care. The US especially is a huge consumer based culture. Just like many consume from more than one streaming content ecosystem as they too have expanded as content owners realize they can have their own.
If you want to play that game or watch a certain series a new launcher or service app won't stop the majority and it's a lot easier than having to get a new console for instance.
People who lock themselves into one ecosystem and people who refuse to engage with one no matter what are edge cases. I have friends who refuse to use steam for whatever reason, Valve is not worried about them.