I think in the majority of cases TV wins that point. Most people don't have the time or motivation to sift through the dregs of the internet to track down programmes, while TV has less better quality programmes that are easier to find. The internet makes it much harder to have water cooler moments.
Game of Thrones is the most pirated TV show, that is another win for TV. Just that you're using the internet for an illegal method of receiving it.
TV programmes that are legitimately streamed by the TV channel don't count as internet programmes as most wouldn't likely exist without TV money in the first place.
There are a few instances of webisodes that have been good, if they are promotional material for TV programmes that used TV money to produce then again they wouldn't exist without the TV studio system.
I can also see that a cancelled TV show may be able to have a further life as an internet only show, but again without the audience base of the original TV show it wouldn't happen.
And yes this does all mean that sometimes there will be great programmes that never make it to air or programmes you enjoy that get cancelled. But overall TV is the best compromise for the majority of people. The surge of people watching TV online has been due to young people who are comfortable with technology and have a lot of time, however it will be interesting to see how that develops as they become older.
Take the My Little Pony: Friendship is Magic popularity, its success has nothing to do with it being on the Hub, its popularity exploded because it became a Internet meme and was available on the Internet thus it was easier for Internet users to give the show a try as they were more likely to get curious and it was easier to view on the Internet then going through the trouble of watching it on the Hub on their TV.
This also show a huge stumbling block to TV, you have to pay extra for most TV stations, while services like Netflix is much cost effective as you pay less money for more content even ignoring the ability to watch it for free.