I do not believe this is true. That is the great thing about ball pythons there is so much to work with and so many combos to make that the big guys can't think of them all let alone make all of them. So even the little guys have a chance to make some thing new out of a small bed room in there house. You don't need a big building or to spend hundreds of thousands of dollars. That is what is so geart about our hobby.
P.S. I have a bumblebee female laying right now bred to a Fire Calico male as far as I can tell I have a shot at making 2 snakes that have not been done yet"Fire Calico Spider" and "Pastel Fire Calico Spider" and I didn't break the bank to do it....