I don't think the idea is for Nintendo to sell more GameCubes. I read somewhere that the Consoles (GC, xbox, and psII) cost the companies between $100 and $200 more than they make off of selling them. So, Nintendo is probably losing money on the GameCubes, but hopes to make up for it by selling more games, in this case specifically Gameboy Advance games to people like me who want to play the original games like Super Mario Bros. I, II, III, etc. again on a big screen, but may not want a handheld. Probably people who may get Gameboy Advance games to play on the GC will decide to get a GBA and vice versa. Remember that Nintendo is virtually the only company to make a handheld. I also think that Nintendo would plan to make money off of the adapter to play GBA games on the GC. It's all about the money anyway. Especially now that the Yen is getting stronger verses the US dollar and Nintendo is losing even more $$$$$.