The way the tournament floor is set up makes that really tough. All the equipment needed for cameras is hoisted in the ceiling. Where the final table is that seems to me the only place they can have the cameras positioned.Plus right by the table is a booth in a little room up top for the commentators. Thats just my guess why they cant.
1) lack of internet capacity at hotels
2) lack of camera equipment at other tables
Many times, the production crew has to compete with other patrons of the hotel - which could compromise transmission quality. Most of these hotels have a T maximum, which would normally allow two tables max if the quality is right-- and that's assuming no one else is on the line at all.