There's way more than enough room for both given how many million UIs get made. I think more time should be spent wondering why cross-platform toolkits aren't good enough. It's kind of lazy to point at the incumbent and say it's their fault for some reason.

Or framed this way: your dream exists and it's called Qt and can be used to make some absolutely fantastic applications[1]. What's deficient about it and why?

[1] https://musescore.org/en