Existing lesser teams will have it worse, potentially, because the focus of attention will shift to exclusive attention on the top pro teams, leaving no place for the lesser teams to share the stage. Right now, everyone is equally visible at tournaments. Even if lesser teams continue to compete in the same league, they will be so sidelined that there will be much less value in sponsoring them. With a few million people watching Dynasty and Infamous, why bother sponsoring Mox Nix and Diesel?
The motivation for keeping the lesser teams in the same league is there: who will the pro players of next year be? Who will replace the players who drop from current pro ranks? The motivation for supporting them is less clear, though. Unless there is some sort of live spectator market developed, there will not be enough money put into lower divisions to cultivate replacement players working their way up.
It seems to me like maybe racing toward TV without having generated interest and accomodating live spectators is putting the cart before the horse in any case.
Any increase in awareness due to TV coverage requires non-playing people to watch the show. That seems most likely to come only if the television coverage is promoted like mad, or if there is a lot of word of mouth.
A drop in prices could come, but only if a lot more people start playing and buying paint, gear, etc. An amusing scenario could develope where paintball companies can't afford to advertise on paintbal TV programs.
Costs for promoters wouldn't in all likelihood drop, though they might get a lot more assistance from outside companies. I don't see why major outside companies would sponsor this team or that. They would benefit as much or more, without the risk of associating themselves with a team that has an iffy chance of representing them well, if they just sponsored the event as a whole.
It is possible that the market for paintball products would expand so much that more money would be available to paintball companies, but they have a long way to go before anti-trust becomes an issue.