Maybe they don't want foreigners to get the code.
vi21
My wife uses iPhone. So you should learn Swift and make a reliable XMPP client on iOS, which always notifies my wife when she has a new message.
I agree open source must be a better choice. However, I guess the Chinese gov't will prioritize Chinese business and acquire Kingsoft instead of using existing open-source office suites.
A beginner doesn't care about Flatpak or Snap or Zapp or other, but I won't be able to support them if they use a different one from me.
I still depend on so many Bash scripts.
Until 1999, Qt was proprietary software. GNOME was started as a free/open/libre alternative. In 1995-1997, we had Fvwm and LessTif, but IMO they looked from the 80s.
If GTK wasn't released in 1998, perhaps Qt would still be proprietary software. If corporates and people abandon GTK, perhaps Qt will become fully proprietary software again.
So I suppose having one DE is too risk for the whole eco-system. Unlike Microsoft or Apple, we are not one company.
When the notification doesn't work correctly on my wife's phone, it is neither iOS's nor XMPP's fault. It is mine.