Should companies be able to know who is using their products? I don't know.
When I buy a new lawn mower or toaster or whatnot, I usually don't fill out the product registration form, as I'm not usually keen to get more marketing material.
On the other hand, government is thoroughly involved in the purchasing of many drugs, through FDA certification, a prescription requirement, and so forth. So it's not necessarily a transaction that has the anonymity of the toaster.
When I buy a new lawn mower or toaster or whatnot, I usually don't fill out the product registration form, as I'm not usually keen to get more marketing material.
On the other hand, government is thoroughly involved in the purchasing of many drugs, through FDA certification, a prescription requirement, and so forth. So it's not necessarily a transaction that has the anonymity of the toaster.