You're right as far as I know. But from what I understand the airlines have cut things so close to the bone that the system is on the verge of total, irrecoverable collapse. There's a crisis with finding enough pilots - becoming a pilot is ruinously expensive and many were killed or disabled by covid. A lot of the infrastructure that allows the planning of flights and monitoring of planes is ancient, on the verge of collapse, and very hard to replace. Boeing, obviously, is having problems.