Black can never (almost) afford ...d5 in the Maroczy. This is an option in the Hedgehog system, which is another beast (quite sound but difficult to play- essentially "the art of doin nothing" both colors involved).
There are a few "active" replies to the Maroczy. Pity they are unsound.
The sound replies are just depressing: Black has just to sit on his limited space, trying to make the apropriate piece exchanges, and having to suffer inferior endgames, queenside attacks, kingside attacks, as well as other unpleasant things...
Thanks for your reply, pfren. It sounds like you know this from experience. From what little I've read on the Maroczy Bind, it seems to be the strongest reply to the Sicilian defense (by the number of chapters devoted to it). It seems like the only way to deal with the Bind is (essentially) to attack c5 or e5 in order for black to play d5 without dropping a pawn for nothing. Is that how you see it?