@Archie888 if you look at the code, you will notice that the mobile platform support parts are dual licensed; open source and commercial.
Having that code in open source means that it is not going away, there is no way it can go away.
Qt Cloud Services was a commercial only offering that did not get enough customer demand. That is a completely different business model. Running a cloud service costs money every minute, something most people completely forget. Without enough customers, it makes no sense to run a cloud service, Amazon, Google and Microsoft can always do it cheaper with the immense scale benefit they have.