Tesco and the Missing Apostrophe

Why cannot Tesco, one of the country's largest retailers, employ people who can write proper English ? In our local "Superstore" are signs which read, for example, "Womens Clothes", or "Childrens Books". Come on, Tesco, get it right and set our children a good example ! And don't come up with the excuse that the apostrophe is becoming redundant, because that is far from the truth.
Kingsley Amis was asked to come up with a sentence which illustrates the need for the apostrophe. He wrote "Those things over there are my husband's" and "Those things over there are my husbands". In case you can't see the difference (and I hate to patronise), the first phrase means that those things over there belong to my husband, whilst without the apostrophe it means that I am married to those things over there !