> Whereas if I upload my ID to a tech company (that potentially answers to both my own government and foreign governments, as well as having its own ad-related agenda) I am a bit less certain about what will happen to this data.
"A bit less certain" is a really mild way of putting it. I'd be confident that whatever ID I upload to the Internet is going to be stored forever, shared with "partner" companies, linked with as much data about me as those partner companies can find, and then eventually leaked in a security breach, resulting in the company issuing a press release telling everyone they "Take Security Very Seriously."
"A bit less certain" is a really mild way of putting it. I'd be confident that whatever ID I upload to the Internet is going to be stored forever, shared with "partner" companies, linked with as much data about me as those partner companies can find, and then eventually leaked in a security breach, resulting in the company issuing a press release telling everyone they "Take Security Very Seriously."