How do you build the software without the data? It seems that, even if the eventual goal is entirely on-premises computation, there still needs to be a period w

How do you build the software without the data? It seems that, even if the eventual goal is entirely on-premises computation, there still needs to be a period where Google has access to the data. One might suggest that Google could create partnerships with medical facilities in order to do the development. Of course, as soon as the news of any partnership with Google arrives, there's an immediate outcry over the data privacy issues. It seems impossible for them to act in this space without receiving flak. I believe there's also the risk that, since they're going to be blamed for all possible evils whether they do them or not, they may as well go ahead and reap the rewards of such bad behavior.