The reason why you can only buy "smart" (read "spy") TVs nowadays is
that the TV itself
is sold
at a break-even price. The profit on them comes from selling
products to the users and from spying on them. If they sold
non-"smart" TVs, they would have to charge more.
If I wanted a TV set, I would definitely pay extra to get one that
could not spy on me. Indeed, I would refuse to have a
"smart" TV at all, unless I knew I could block it from communicating
anything about my activities. (That would convert it into a mere
appliance, and I would not need to care what is inside it.)
The same applies for a cable box; but I can imagine that a cable box
requires a contract I would consider immoral and thus refuse to sing.
I don't in fact want those things, because they would lead me to waste
time. As a child, I was a TV addict. I cut it off cold-turkey when I
went to college.