I hardly think this is an issue of morals or the moral police. In a capitalist system, you are given service in return for paying a fee. If you do not pay, you do not get the benefits of the service. Any other way would be what, class? Communism!

I could see perhaps a communist Vietnamese or Chinese person feeling entitled to something for which they did not pay, but anyone else in the free world should be able to grasp the nuances of "Money for Goods" trade.
We have a whole section of local, state and federal laws set aside for dealing with people who believe themselves above this protocol. "Taking property belonging to another with the intent to permanently deprive the owner of the property" is larceny. If the value of those goods reches a certain threshhold, it is called "grand larceny". When you purposefully walk into the concierge lounge and deprive other guests of using the service for which they paid, whether it be a cookie, a glass of water or occupancy, you are committing a fraud against those rightful owners.
This August, when I'm staying at Wilderness Lodge concierge level (probably the only time) for my honeymoon and you decide that your perfectly adequate standard room entitles you to partake in the concierge perks for which I have paid, I am going to make sure you hear the full length of my disgust for your larceny. You will not be allowed to leave until the I have exhuasted all available sources of wrath. You will also know what it means to be called a thief in front of any nearby friends and family. Should you have children in the room, I will ensure that they forever understand how their mother or father stole property that did not belong to them and how they should be ashamed to share a name and genetic makeup with the perpetrator! All bow before my tirade! Well, maybe not quite that far....
This is not morals ladies and gentlemen- morals imply room to argue and dicker based upon intanigble sets of values. There is no way to justify theft of concierge services. Why don't you go try to take some "unused" money from the bank and se how far your moral argument gets you.
Won't someone think of the children!?
-Andrew