The tech companies have been able to "spy" for a long time.
Even when they weren't "legally" permitted to access what people watch, they were tracking where people go by means of where their phones go, and that was pre-"smart" phone era.
I worked as a transcriptionist and sometimes the phone calls of clients or the business meetings of the people working in the field of I guess what you would call "spying" or mining for data or whatever were discussed in the meetings I had to type up transcripts of.
There is nothing that is private or hidden. All the "passwords" and "firewalls" are just to make people think they have some control over the info and not be so paranoid, but the truth is that nothing online can be hidden.
The government can access it. The computer guys who know what they're doing can access it - whether they work for WT or for UBS or for the mafia or whoever...there is nothing hidden.