Just want to be clear that I am not defending someone who is "screwing over" other people....nor suggesting that is the way to play the game. Maybe that is a few people's fantasy....not mine 

I know; just clearing up the ambiguity of the example, is all.

Even with the extreme example that I gave....would be hard pressed to identify how the restaurant owner is screwing anyone over.
With that specific example, I don't think there is identification with foul play, but with the more general "I'm here for MY fantasy(-ies)" mentality, there is potential for people to use that as justification for it.
I'm pretty much with you on the black and white areas of running a business as far as ethics go. Not sure if you and I would agree on the gray areas.
Maybe, but then again, that's why they are called "gray", because it is hard for any number of people to come to a consensus on them.
But then....who are you and I to define what is black and white and what is gray, anyway.
Uhh, well, who am I to call the sky blue and the grass green? Who do I have to be? It isn't so much a matter of "defining" black/white, but observing that something just is, and understanding why. As for gray, gray requires both definition and consensus, otherwise, it wouldn't be "gray". So far, I have yet to see much in the arguments in this thread or any that may have spawned it which I would consider "gray". Some may not be as stark as others, but it doesn't take too much effort to see through the "gray" smokescreens that people throw up as a defense and make that observation for themselves.
It's probably the attempt to "define" something here, that I fight for.....and play devil's advocate for....once you start doing that....you start taking away some freedoms that people come here to enjoy.
Some "freedoms" I am more than happy to take away (or request taken away, if I am not the grantor) from people, because said freedoms weren't theirs to begin with. Freedom comes at the price of responsible exercise of said freedom. If you can't exercise it responsibly, then you should lose it. Period.