We all know that they have to have somebody to fly the airplanes. If they are desperate then they will go to the low-timers.
Ok now here is the problem: Military pilots and CFI's are low time, but when they screw up it will only hurt one or two people both of which know what they are doing can be dangerous. At an airline, when the low-timer screws up fifty or more people will be dead or injured. These people are buying a ticket with the expectation that they will be transported by someone who is going to keep them alive when things get bad. The passengers know nothing about flying and that is what they assume and have every right to expect.
Low-timers do not belong in a jet or t-prop flying people around. When the going gets tough most of them will need to change their pants. There is no substitute for real world experience, not a sim, not the books, but real flying experience. Not to mention that I predict the IFR environment in a jet will have these low-timers hanging on by the vertical stabilizer.