These companies want to never have senior workers. They only keep them on by economic necessity. Senior workers are more expensive, so they really want to “de-skill” their workforce in order to decrease how much they will pay and make it so that they don’t lose as much when firinh anyone for any reason.

When companies fail at this, which is what most of these will do, they reach a profitability crisis and either go bankrupt or get bought out by more liquid monopolies. If the big monopolies run into trouble they get the state to bail them out. Those that survive and try to be productive will need to pay a premium for senior labor and consider increasing levels of training they will fund. But this really depends on how much money they can throw around, which will be not much when this bubble bursts unless the fed goes ham.