No, it is suppose to make money. It used to be that everytime a Zelda game came out you knew you would go out and buy it the first chance you got (well, that is not including those CD-i things that nobody knew existed. But I bet had they not been so obscure, most of us would have bought them right away and a CD-i, then been sorely disappointed). For the last few years it seems they have been spitting them out left and right. I honestly have no idea how many Zelda games there are now. As a fan from the beginning, this is something I never thought I would say. I waited patiently for A Link to the Past - Mojora's Mask, and now I hardly even care any more. They used to all be made with time and care, now they realize people will buy them no matter what. Some of you here have said Windwaker is pretty good. I may have to get a Cube and try it out sometime. With the quality of Mojora I wasn't sure what to think when I heard they were making a new one, then when I saw the graphics I was very unimpressed. It is not that I didn't try it because I was close minded about the graphics, I just didn't expect it to be very good and I had never upgraded to a GameCube.
Concerning the two oracle games, the fact that two very simular Zelda games with very simular names came out at the exact same time indicates that it was a quick money job to capitalize on the Zelda name.