It's a good question Cirronimbus.
Perhaps there's an aspect to this thing we haven't thought of. Maybe REX are happy to carry a significant excess of crew. Or is it possible REX management have painted themselves into a corner and are either too vain, or frightened to admit (either publicly, or to the Chairman perhaps) that they've got it wrong! I think I know which one it is.
Either way, it can't go on like this forever. Some "interesting" announcements probably sooner rather than later methinks.