I have nothing against you or your opinion Epitaph but its a silly idea you have there.
Nintendo are in the business for 2 reasons.
One is to entertain and the other is to sustain profits while dedicated in entertaining.
Console competitors have come and gone and new console competitors will arrive also.
For starters Nintendo to port/develope its franchises on other platforms is ludicrous just so mainstreamers or casual gamers who have never experienced Nintendo's class may give them a try, and on top of that the other platforms cant handle Nintendo's phylosophies in gaming.
Sure ps2 can handle innordinate FMVs that push along games while the Xbox is a mid-range PC pretending to be a console or cashing-in in the console industry but the Gamecube was specifically built for the most efficient deliver of software.
Example, Metroid Prime would have longer loadtimes (simular to RE running on the PSX) if it was developed for PS2. It defies the purpose of Nintendo's beliefs in quick relatime entertainment.
Xbox creators are fascinated with graphics and in the process they lose framerates. Even with the aid of HDD cache on Xbox, Metroid Prime would be chugger.
Rather than be slightest bit concerned about Nintendo's lack of userbase or whatever it is that you need to express Nintendo should expand, just enjoy their excellence to deliver a gaming platform that is built around the basis of no-load screen bars and that focus on giving the player something to take control over rather than ride-out FMVs.
And enjoy the facts that they (Nintendo) deliver excellent software that is coded around the balanced hardware.
Why Nintendo should then code software (take steps backwards and go in line with their technologically disadvanced competitors) by launching software on competing platforms just so other users may experience their brilliance is utterly silly when they are entertaining and making profits already and the other platforms dont share the same phylosophies in entertainment.
Nintendo is way too traditional and passionate for that.
2003 = The Year of the Fund Q and Triforce (albeit some delays)