
Thammorn |

Dice rolling concepts for character creation ARE NOT "owned" by WotC. From the beginning of gaming, these conventions have been used by several companies. Within the first couple of years of the original D&D, the exact same conventions were used by Chaosium and Palladium, as well as numerous other products. Since these games predate the creation of WotC by some 15 years, I think a copyright infringement case would be pretty tough to press.
I prefer point buy, but that's because I have one player who can min/max beyond belief, and even point-buy is not infallible. Point buy CONCIEVABLY could have been protected, but other companies have printed the details (INCLUDING Paizo, albeit in the Dragon magazine format) and if no foul was cried then, then again, it would be hard to push the case.
As a side note, I remember when ist edition AD&D's Unearthed Arcana came out. Inside was the notorious "Charcter Generation Method 5," which called for the rolling of anywhere from three to nine dice for each stat, depending on how important it was to the charcter class. Stats could be unbelievable, although the random chance could still play hob.