Fanboy/girl Rants please!!

[K_I_R_E_E_K]

Its not forbidden. What happens is that the various companies get together and come up with exclusive licensing contracts which involve vast sums of money and a deal to only produce said game on said console.

Much like Katamari is solely licensed for use on sony ps2/psp at the moment. Its not forbidden to produce games on other systems, its just the original licensing agreements, being as they are legal contracts, can't be broken. That's all.....

you're wrong! If software houses wanted to produce games for a Nintendo console, Nintendo would make them sign a contract restricting the softhouses from porting any of those games for another consoles, never.
Today a company is free to develop for wich system they want, the exclusivity has only to be mantained for 6 months.