Any look at the public order book shows how tenuous the orders are--Republic can't take theirs; Porter probably won't take theirs; the leasing companies haven't made any announcements of placements; Odyssey is a crowd-funded start-up, which along with Privat-Air are trying to make a run at BA out of LCY. The first half of the book could easily cancel. The price, regardless of any discounts, is simply to high for the financial and operational risk a buyer takes. What airline would bet the plane and company are around in 10 years?
The collateral damage has been huge, as peekay points out. Plus the wasted money on the LR85 and the C has closed options to develop what really needs doing--a replacement for the Challenger 605; updates to the Globals and getting the G7000 in service on its original schedule. They're losing on both commercial and corporate sides.