DMOZ is inconsistent in its interpretation of the one category rule.
I know that dmoz asks/tells us not to submit to more than one category, but if the site fits more than one cat, is it possible to submit to more than one cat? Could I submit the individual page that fits the specific, different cat than the one the homepage is listed under?
Because different volunteer editors treat submissions differently, there will always be exceptions to the rules.
I know of many businesses that have deservedly had more than one listing; and many that don't deserve more than one, who have several.
On the other hand, many sites that could easily be in several categories, due to wide ranging topics, have been rejected.
I agree brick and mortar businesses can get a second listing. Again, care must be taken to follow DMOZ's rules, as the results are mixed.
I am not a volunteer editor at DMOZ, but all of those people that I know who are editors, are extremely dedicated to their jobs. I commend them on that devotion to making their directory the best it can be.
Many editors interpret the rules differently from others, however. Some are strict rules supporters. Others are more liberal in their interpretations. That is not a criticism. That is human nature.
My DMOZ suggestions certainly err on the side of caution, and toward following the rules. I would prefer so see a business get one listing, rather than none.