Once the new stadium is ready, every business in L.A. is going to be buying tickets for Chargers games.
Keep in mind, the Rams were playing in a stadium that can hold 80-90k.
The Rams were only about 1.5k lower than the Saints in attendance.
http://www.espn.com/nfl/attendance
And in that chart it has the Chargers selling 31k seats in a 25k stadium.