Let's forget about ball pythons for a sec and talk about snakes in general.....
Until the internet got hot, I never heard of any problems with (or had any problems with) housing large drys together. I have always kept 1.2 trios, 1.1 pairz and two females together - always of similar size (I'll admit I've never kept two males together).
I'm always sure to provide them with large cages, multiple hides and large thermoregulation zones and there are certain protocols to follow when feeding them.
I'm talking years with these animals. I always make sure they are fed and have plenty of space and I have never had one single problem.
Now I go onto websites and hear about people warning not to do this with cribos and indigos because they'll cannibalize each other, they'll egg bind and stress each other out.
I converse on a fairly regular basis with some old school dry breeders who have followed similar practices and never had an issue - so where is all of this contrary information coming from?
Now let's go back to balls. Yes, for the average person keeping his balls in a blanket box rack, co-habitating makes no sense. While I am not big into regius, I know plenty of people who successfully cohabitate their balls in adequately sizes enclosures with no issues.
Let's try this: instead of everyone saying that it can't work, how about offering advice to the OP in case he wants to make it work?
1. You need an adequately sized cage.
2. Keeping 2 males together is not the best idea. 1.1 pairs or 0.2 pairs work best.
3. Multiple hides are needed, along with thermoregulation zones big enough to accomodate the number of snakes you are keeping together.
4. Only house healthy snakes together that have been through quarantine and are disease free.
5. Make sure to follow safety protocols when feeding.
There are more but you get the idea.
It's better to say it can work under the right conditions than to say it's a bad idea, or that it can't be done, or even shouldn't be done.
Just because you don't know enough to house multiple snake together doesn't mean that someone who wants to try it should be denied the information required to attempt it - right?