I've made the comment several times, that we are a few short years away from TV dieing as a medium for entertainment transmission. That it will be replaced with the internet.
How long do you think it will be before this happens, and what do you think will be the "final nail" in the TV Network model of business
I don't think it will happen for a long time, due to financial interests.
We can look at the question from a different point of view. Namely, from the government's point of view. Whenever a broadcaster launches a channel, they first need to purchase bandwidth, and maintain annual payments on that in order to keep it. I don't know the figures, but I'm sure that is a huge amount of revenue for the government departments that regulate it.
The motivation for "going digital" is probably in part due to the increased revenue of having 100's of channels instead of less than 10 that we had previously, which is over a 10 fold increase in revenue.
Does digital increase the number of quality programmes being broadcast? No, they're just spread thinner.
Does digital increase the number of viewers? No, and the public don't need all those channels.
The people who benefit the most from digital are those who sell bandwidth.
So I don't think television will die out for a long time because that government department won't want to see a loss of revenue. Through customer incentives and extended contracts will want to keep the television service afloat for as long as possible. At least until something else comes along demanding bandwidth that they can license out to in place of television.
The biggest reason why the government was pushing for the digital change over was because it wanted to reallocate the RF spectrum reserved for tv broadcast for other uses. It has and the vast majority of that spectrum was picked up at auction by telecommunication companies for use for mobile phone and wi-fi use.