I see no reason why this couldn't happen. Perhaps there would be some regulation on the guarantors (need to meet the definition of accredited investors and be limited to some small-ish number of participants for simplicity's sake), but the ultimate dynamics woudl be Cortex would get a bank loan guaranteed by a few indiviuals. The bank would have little risk as tehir exposure would be covered by the guarantees. Companies get financing like this all of the time.