Well yeah, I mean you don't necessarily have customers per se but get out and talk to people with real problems.

People who have money at stake in some way is probably best.

My 2 cents anyway.

Also I like the idea of non-glamorous businesses. There is an English saying "Where there's muck there's brass".

Chicken/Egg? Or should you treat everyone as your customer? If you do that too obviously, you come off as a prick, I think.