I can't say that I blame the restaurant... however all they can do at this point is just refuse them future service (which they are doing...)
Pretty much it is a shame that folks would do something like that at a buffet... especially when they do it with the "popular stuff" that everyone likes. I remember one time going to a buffet where this one guy would basically take almost the whole tray of this one item and would just sit there and watch everyone else look at him with his plate filled high and the empty pan on the buffett line.
So inconsiderate...

I mean c'mon.. .it's a buffet but that doesn't give you the right to spoil it for everyone else.
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