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Re:AirMessage – Android app to interface with iMessage on a Mac by eertami on Saturday September 05, 2020 @04:23PM (#24386589)
The UK has a lot of iPhones but WhatsApp is still the default messaging app.
Re:AirMessage – Android app to interface with iMessage on a Mac by arrrg on Saturday September 05, 2020 @05:42PM (#24387079)
Still substantially fewer as compared to the US.

I think you have to switch your assumptions around. The cross platform solution of a communicator should be considered more likely to win out in a competitive duopoly.