So I'll just sum this up briefly. According to Bahamut's logic, if a band of nerds were allowed to make a free 3d remake of Chrono Trigger, Square Enix (and every other company) would never make a new game (or anything) again.
How does remaking a fifteen year old game, for free, harm the company's business.
Especially if they go on to make, I don't know, a third Chrono game instead of (or even as well as) porting it to the DS.