Baseball already does this but that's because they're the only sport to hang onto all their internet streaming rights.
Most sports have internet streaming tied to their broadcast deals which prevents them from being fully streamed.
Slight edit for those who don't know. There are Over The Air HD antennas. If most of your sports content is on one of the big networks (football, some basketball and football) or on a local over the air channel these work pretty well. I have one plugged into my HDTV/Monitor at work and was able to get HD football on it pretty damn well.
Most sports have internet streaming tied to their broadcast deals which prevents them from being fully streamed.
Slight edit for those who don't know. There are Over The Air HD antennas. If most of your sports content is on one of the big networks (football, some basketball and football) or on a local over the air channel these work pretty well. I have one plugged into my HDTV/Monitor at work and was able to get HD football on it pretty damn well.