In my limited experience with “Cartels”… there are two kinds of people: ruthless and rational; ruthless and irrational. If they are anywhere near the top, you can bet they are the first type.

It seems you want to deal with multiple cartels at the same time. This is suicide. If you do it anyway, treat them all equally, show no favoritism, never compare them. Think of it as having a bunch of aunt/uncles who always tell you that you’re their favorite. They’ll buy you gifts to get you to say it back.

The other side of this: if your software has a bug and causes profits to go down… you might be on the hook for that. Make sure you make it clear that you aren’t responsible for their profits. Yes, your software MAY increase their profits, but they’re responsible for execution, not your software.

Note, this is second-hand advice from a friend.