Blue Apple Herps put it perfectly...as for corns specifically, still better off housing separately. Baby corns have been know to eat each other, not so much adults. Still, it's like driving without a seat belt or leaving a candle to burn overnight.
"Snakes have been known to cannibalize each other. Size doesn’t seem to be a trigger for it, either. When a snake eats another snake, usually both of them die. I’m not actually aware if any cannibal snakes have lived."
Quoted from your article...I would hotly contest this statement, as there are noted species of snakes that eat other snakes and do just fine.
Another thing I'd like to point out is that when people say snakes don't live together, they are completely generalizing. Garter snakes and rattlesnakes, notably, hibernate in large groups. However you wish to look at it, that is living together, and depending on where, it can be for the better part of a year.
Now, that being said, there is absolutely nothing beneficial to co-habitating captive snakes.