Sure it is the cost of doing business, like when people steal your glasses or silverware. They don't cost much, but the more you have to buy so your customers have enough to enjoy their stay there the less profit you will have. If they just wanted you to steal their wifi they probably would not have a password. If you are aquiring wifi passwords not as an approved way by the provider then that is stealing, not sure how people could see it any other way.

T