[majewsky]

Two effects going on there in parallel:

1. In the last wave, some hospitals reported more ICU beds than they were actually prepared to staff, because each available bed in the datasheet got them a hefty government subsidy.

2. A non-negligible number of ICU nursing staff were worked into the ground in the Winter 2020/2021 wave and decided to quit (read: move into similar jobs with less horrible working conditions). From what I hear (caution: anecdata), a lot of the remaining staff are now considering to follow them.