Feels like those kinds of terms are moot in the big picture. Could they enforce it? Perhaps they can if a significant amount of the data produced is their IP, but who would they enforce it against? Consumers? Not much to be gained by going after them.

I can only think that they are hoping businesses might use the free plan and that they can sell them paid plans as part of an enforcement effort, but it doesn't seem like a very sustainable approach given the industry standard is to not claim ownership.