Because "big data."
“At a base minimum, people should be able to walk down a public street without fear that companies they’ve never heard of are tracking their every movement — and identifying them by name — using facial recognition technology,” the privacy advocates wrote in a joint statement. “Unfortunately, we have been unable to obtain agreement even with that basic, specific premise....
“This should be a wake-up call to Americans: Industry lobbyists are choking off Washington’s ability to protect consumer privacy,” Alvaro Bedoya, executive director of the Center on Privacy & Technology at Georgetown Law, said in a statement.
“People simply do not expect companies they’ve never heard of to secretly track them using this powerful technology. Despite all of this, industry associations have pushed for a world where companies can use facial recognition on you whenever they want — no matter what you say. This position is well outside the mainstream.”The Intercept
Privacy Advocates Walk Out in Protest Over U.S. Facial Recognition Code of Conduct
Dan Froomkin