It won’t be long until we start taking a ddwrt approach and jtagging our tvs and replacing them with custom ROMs.
We’ll be okay for another 5-10 years before they securely start locking that down too.
I'm optimistic within 5-10 years we'll start to see the rise of open source tvs that'll save us. I have no sources to back this up but seeing the release of several open source laptops gives me hope.