That was probably me that asked about debt before Zach. I didn't realize the full ramifications of debt before because I hadn't been able to play the game yet.
Cerzi, the point is, you CANNOT take on careful debt with auto-supply in other industries. With auto-supply on, if your cash reserves hit 0, then all non-support auto-supplies shutdown. This might be understandable if all industries worked this way, and I understand why they do not, really, but when one consumer of something like oxygen can buy on credit, but another cannot, it drives a, probably, unintended motivation on what will be produced because of the inconsistency in the rule.
I say its still wonky, but if you want to prevent early purchases and still have this mechanic, then let any building on auto-purchase, use credit if necessary, but require cash for manual purchases.