I think naspers complained about netflix / Hulu thus the lack of connectivity in 2014... I can see that dstv is losing out so they made a deal with the devil. Or the devil made a deal with them? I think the right answer is devil made a deal with another devil...
This is not a deterrent because many people who value those services will just change ISP's. In the process TI loses out on their core business.
I find it hard to believe that they would bow to Naspers to such an extent. But hey, funnier things have happened.