The reduction in pay comes with a reduction in workload. Which means that for most companies adopting the 20% paycut, they are also transitioning into a 4-day work week. Its hardly a related to some corporate greed trying to squeeze their workers, but a sign of desperate measures for desperate times.
I have a hard time believing that workload is reduced. In theory it makes sense, but companies are not charities, and unless the government makes it the rule that workload gets reduced, I think it's just gonna be a direct paycut.