Pool used to be on TV quite a bit. Major sports channels (espn) used to televise major tournaments.
I really hope pool makes a comeback in North America (it is just as down in Canada as it is in america). What needs to happen is something to drive interest in the general public. When the general public wants to watch/play pool there will be more sponsors. When there are more sponsors (big non pool sponsors) the big sports networks can make their money by televising events.
The question is - what can be the catalyst to drive interest? A pool movie like the color of money? Maybe the hustlers tv show will help.