They're not the #1 phone, they're not the #1 computer platform, they're not the #1 smart speaker, they're not the #1 monitor vendor, they're not the #1 streaming television dongle.
I don't know how you can say "most are industry leaders in their respective segments."
Do you consider Old Navy to be an industry leader for apparel just because they pump out huge volumes of crappy clothes?
The fact of the matter is that Apple is the biggest manufacturer of smartphones in terms of net profit, by far. It’s not even remotely close. That sounds like an industry leader to me.
I don't know how you can say "most are industry leaders in their respective segments."