[Jtsummers]

And even if they did, there'd be five competing efforts, two would be good or at least decent, four would be deployed (not the best one though), and all would be replaced in three years.

None of them would work on-device, all would leak your data into the training set.

[matwood]

And you forgot, if it was Google they would also all have their own internal chat service.

[theshrike79]

And two of them would be killed within a year and/or renamed/rebranded :)