I respect your view, but consider this... one of the reasons I picked that hotel on the beach was because they had comfortable lounge chairs available for guests on the beach. So we went to the beach and saw that there were a number of chairs that were "saved" but not being used. I do not think it is right that I planned my vacation relying on certain advertised amenities and then when I get there I cannot use the amenities, not because other guests are using them, but because other guests are "saving" them by putting a towel or some personal items on them early in the morning and then expecting to come back several hours later, perhaps all day, and expecting no one else to use them in the meantime.
So, not being able to use unoccupied lounge chairs on a beach that I paid for as part of the hotel experience seems very un-vacation to me.