If successfully certified, the MAX will be around for anywhere between 20 and 30 years, I think. For that long a period, we'll likely witness at least two or three complete boom-and-bust cycles, with all their associated effects. The fact that many airlines won't take their deliveries in the next 2 years doesn't mean that they won't in the subsequent 20 years either. The existing aircraft will not last forever, the pressure to lower costs will not go anywhere and aviation will not remain forever in a state of global crisis.
Either way, any deliveries for now are a far cry away. FAA certification this fall might easily mean that EASA certification will not happen before 2021. And who knows what life will look like by then.