Honestly I don't know where the millions are needed.If drivers abandon one app in favour of another the customers will follow.They don't care what name is on the app.
Worst case mytaxi improve driver terms and conditions out of fear of losing the little bit they have,best case drivers get a workable app.I'm sure we'll have something to moan about either way.
At this stage I think anybody but Daimler would be a better option.