Why would it be catastrophic to allow a system where more than a "lender" is able to secure debt? Are you telling me business lenders are looking at balance sheets when writing loans and counting on inventory and FFE that are not yet paid as collateral? If so, that's one hell of a problem.
Secure lenders should have all rights to assets that have been PAID for... Point blank. Though I would argue unpaid base wages for employees should be placed ahead of all else. But pensions, bonuses, etc should stay in the unsecured category. The only way you could possibly make the argument that giving vendors and employees equal footing in securitization of debt with lenders would be "catastrophic" is if the system counts on that portion of the "collateral" when making a loan decision.
Banks will still write plenty of loans if they don't get to seize unpaid inventory as collateral when their clients **** the bed. They will still write plenty of loans if unpaid wages are at the front of the line upon liquidation. In fact, one would argue they would be more diligent about writing such loans. Businesses would be able to lower costs and more willing to extend credit if they have more recourse in recovering losses when they do so.
Your argument is, we the lenders get to secure our debt to reduce our risk and nobody else does.
As for CAPEX. Assuming you work at a bank and your institution gets a .25% rip for writing new loans. I work at Microsoft and want to build a new campus. $2.5 billion. You get to secure it against only the new campus itself. And if you foreclose, all current vendors/suppliers in the project are to be paid in full. Are you writing that loan? Your damn right you are. Maybe not at the exact same rate as if the little stipulation about not 17ing the vendors wasn't in there, but you write that loan all day. Now where it doesn't get written is if I am trying to do it at JC Penney or some other garbage company and we should all be okay with that.
No system would collapse. Interest rates would increase, but not much, maybe not at all for the most credit worthy. The reality is as a vendor, supplier, employee, or bank, we are all lending to the company. Unfortunately, the system we have in place is one where only one lender gets to secure the debt and everyone else gets to eat **** if it hits the fan.