Analogously, there's evidence that companies will make extensive use of available techniques (browser fingerprinting, cookies, etc.) to track and surveil users without their knowledge and often against their will. The exposure of that arguably also hasn't triggered an effective backlash against those companies. So, as with the pre-Snowden evidence for domestic communication interception by the NSA, I think there's ample evidence of the willingness of companies to exploit whatever technologies they can in order to surveil users.