Btw. I read somewhere "they" already have a lot of data.

> With easy and ready access to medical data we could be decades ahead

So make it ! On premises. Pay for helping in that. Do not pay for storage and cpu in clouds ! And don't be naive about what good and progress "they" can bring to medicine. They will promise then stall as much as possible and you will be paying for not deleting your precious data. Or accessing your own data :> And watching like your data are published and sold on black markets...