My economic analysis is completely different.
I don't see what gain AOL or Google gets from my work. And even if I saw, it wouldn't matter to me.
What I see is people who are looking for information, unsuccessfully, until I show them how to use the Open Directory. THOSE are the people who are being benefited, and THOSE are the people I'm working for.
So far as AOL and Google are concerned, they are giving ME a service -- providing information to users like me, my family, my friends ... and doing it at no financial cost, and with absolutely no irritating, bandwidth-hogging, space-wasting advertisements/promotions (on either directory.google.com or dmoz.org!) How much would you have to pay to get that kind of service elsewhere (if you could find it at all)?
And that's not all. I'm not just a surfer, I'm also a content provider. And for my web link content, AOL is hosting it (for free), providing first-class tools to maintain it (for free), and, not least of all, building a fascinating community of likeminded people to work with.
I'd be doing more-or-less what I'm doing today, for the same pay, with or without the support provided by businesses, schools, or churches. But -- the more people who can use the results, the better. Google and AOL both do an excellent job of making it possible for anyone in the world to use the results.
Oh, but you're thinking the only conceivable "use" of something is "make money". How ... sad.
Because that's not really an effective use of the ODP at all. Sure, the ODP data is available free of cost, and free of significant obligation. You can do almost anything you want with it. But ... it's pretty stupid to think anybody on earth should pay you for just posting a copy of it on your website, isn't it? Because they can get the same information, faster, freer, fresher, from AOL or Google!
So I'm altogether in favor of Google using mass copying of the ODP (or wikipedia, or gutenberg, or vstore, the CIA Factbook, or hotelnow.com, or ... use your imagination), without added value, as a signal of a infinitesimally-small-value website. The better Google does this -- the better Google weeds out people who try to profit from our work WITHOUT paying back to the community like our patron does -- the better Google serves editors, surfers, and all genuine content creators. And who else is on the web? Nobody that is going to use MY material in any way that matters to me. Nobody that is going to create anything that I would use. In other words, nobody that matters.