There are some that provide exactly what you're asking for. At&t park (whichever baseball team they have, I can't remember) has what they call the Digital Dugout which has instant replays, including ones that can't be shown on the big screens due to MLB rules. It's only accessible from the network in the park, but supports a multitude of smartphones. For the 2011 superbowl, the cowboys stadium had an iPad app with everything from maps to player bios to live scores to replays to a live view of different cameras.
A lot of the teams/stadiums know what's wanted, but the number of companies that can set up a WiFi network that works well under the worst possible conditions is significantly lower than the number of companies offering it. And the good ones get bought by megacorp and turned into one that can't.
Awesome! I figured the major problems would be the difficulties with infrastructure, but also renegotiating broadcast contracts, as announcers are employees of broadcasters, not venues.
It reminds me of the older guys at the ballpark that wore those radio headsets for play by play. Glad to see progress is being made, however slowly.
A lot of the teams/stadiums know what's wanted, but the number of companies that can set up a WiFi network that works well under the worst possible conditions is significantly lower than the number of companies offering it. And the good ones get bought by megacorp and turned into one that can't.