You and I can't buy it because they don't want their competitors getting it. But they'll happily use it to target ads at you, and the US government has access to it and can use it to decide who they want to send their CIA kidnap-torture squads after.
Which is in this case a pretty important distinction. Letting another company leverage user data within the bounding zone which you've defined is not the same thing as is being alleged here, which is actually sharing data.
It's quite literally the difference between exposing a public API and actually handing over the contents of the database.
> Letting another company leverage user data within the bounding zone which you've defined is not the same thing as is being alleged here, which is actually sharing data.