Bingo.
This is what people don't understand. Every time you steal, scam, rip off, abuse, obfuscate, deter, lie, con, or do anything else that effects the bottom line of a business, you're only making it more difficult for other people that use that business.
I run a shoe store. I know when these high schools have their homecoming and prom dances. And every Monday or Tuesday after, I get these uppity soccer moms trying to return used shoes and say that they didn't wear them, I end up having to give them cash back and then lose the value of the shoes. Two months later? Same assholes are in the store bitching about how the price of shoes goes up year after year. Obviously it's largely to do with the economy, cost of product and overall quality of the dollar, but if we're taking losses on shit, guess where that money is going to be made up? Other customers.