Medical marijuana was approved by California voters in 1996, and it's a billion-dollar industry. But state law gives cities the option of either approving dispensaries or banning them. Anaheim had more than 110 dispensaries three years ago. Since then, it's been closing them down — going to court and shutting off their water and power. The city is now saying "no," but Santa Ana, next door, held a lottery last Thursday for 20 licenses. No less than 630 applicants paid $1700 each for a chance to open a business.