A real MPL scheme is always tagged to an airline (at least in EASA), so there is some realistic expectation of getting a job at the end of it. and if not you have already passed some sort of airline selection process rather than going in blindly self sponsored to a flight school and hoping the airlines will like you at the end. So it’s less risky in that perspective.
Furthermore the aircraft type rating is part of the MPL training, so at least if the airline turns around and says no there’s no jobs anymore you have a type rating on your licence which other airlines may recruit for, or at least shows you can pass an airline run sim course as opposed to just flight school flying exams and multiple choice questions that are all online. Once the MPL course is complete you can switch to any other airline.