Softer pot laws saved Philadelphia $2 million in 2010

From Raw Story.  Let me get this straight:  Softening/Decriminalization pot laws could not only generate multiple types of revenue to local, state, and federal coffers, but not having to enforce these laws would save every municipality/town/city tons of money, too?

The fucked up stance would be to do nothing, so let's do that. 

Is America that freaked out that potheads might actually save the day?