In another excellent analysis, AAS's krisse predicts the fall of traditional TV broadcasting, along with the eventual redundancy of even DVB-H, DMB and Slingbox-style location shifting. The future of TV might be mobile after all, but as with most things, the Internet is the key...
Read on in the full article.
There's also various TV on-demand projects due to launch like The Venice Project, interesting times indeed.
Certainly a challenge for rights holders for events like the Olympics, World Cup etc.
Interesting you mention sports, there was a news item on the BBC today which suggests that selling rights region-by-region may become impossible to enforce:
http://news.bbc.co.uk/2/hi/entertainment/6192264.stm
Certainly it's difficult to see how they would deal with something like the Slingbox: it retransmits your totally legal television's signal to your phone or PC through the internet, so is it illegal for you to watch your own TV while you're abroad?
In the UK there are a few issues around mobile TV that could land the user in trouble - I read this information somewhere, could have been BBC.co.uk or The Reg
1. If you plug your phone into a power source to watch your TV program (say at work) the location you plug into must have a valid TV Licence. In practice this could be difficult to enforce and is not applicable to watching TV off of the battery.
I don't think this will affect internet TV, although you do need a TV Licence to stream live TV from the BBC.
2. Sky apparently have a clause in their contract that states you can only watch sky broadcasts in the location the sky box is contracted. Therefore things like slingbox would break the terms of your contract (and I know how petty sky can be about things like having phone lines plugged in etc.)