Having a lot of money and a big legal department doesn't automatically make it easy to get out of unpaid debts. Courts take these things very seriously.
If there's a contractual get-out clause that allows Apple to avoid payment, or if there's something in the developers actions that has created ambiguity, then it would be good for all of us to understand the details.
A poll that basically says "hands up if you think Apple owes you money" is not informative.
Being employed by any normal company makes you 100% dependent on a single entitity. In contrast, being independent allows you to put your eggs into different bags. The App Stores are a part of it by providing international payment. What would you suggest instead?
You're 100% at their mercy.