the number of fitbit owners <<< number of google identities (for search traffic)

and

data and location from fitbit owners < what they can already get from the andriod phone.

I get the point you are making, I am not denying there is value, but it is a stretch that it is all about data.

In fact, I have heard about companies who had ties with Fitbit to sell location data to third parties. I would much rather have Google be that arbitrator.

I don't work for Google or Fitbit.