The phrase "inevitable collapse" means that something is certain to fail or come to an end. It suggests that there are no other possible outcomes or ways to prevent the failure or downfall. Full definition
It was bad enough to learn last year that the ice sheets of West Antarctica were headed toward inevitable collapse in just a few centuries and that the world would have to contend with the more than 3 meters of water they hold. (sciencemag.org)
Avoiding these mistakes will save it from inevitable collapse. (inc.com)
Renewables and associated storage, transport and digital technologies are so rapidly disrupting whole industries» business models they are pushing the fossil fuel industry towards inevitable collapse. (paulgilding.com)