I'm still new and researching, but from.what I understand -- housing some together although not "best practice" can be done safely and responsibly short term if there are enough hides, and the snakes don't show signs of stress/stop eating.
I can't find anything on adults eating each other, but I have come across 2 stories about hatchling doing it.
Mostly the concerns are about health issues and diseases, not enough space or hides, stress and animals that stop eating.
As I learn my way through ball python care/husbandry I hope to get constructive feedback on my setups. I've already realized that I'm not going to have adaquate humidity with a screen lid the way I have it set up now, so I'm working on changing that tonight. My goal.is to have very, very spoiled animals with top quality life.
Thanks!!