Um if you were as big as some one like Ralph with a 5k+ a month power bill and all of the expenses that go with taking care of a big facility and tons of snakes, you would keep secrets too. Otherwise that unique animal that took you years to make would be done by more people and bring your profits way down super fast. It is a marketing strategy. He has bills that have to be paid. If no one knows what the genetic ingredients of a special snake are, no one else can make it. Once every one else knows what it is and they start making them all over the place, he loses money.
If you didn't keep those type of secrets for as long as you could it would be pretty silly. Might as well just hand money out to people or just give away your snakes for free.