On those occasions I've often wondered how much of an impact the high trust and high social of safety has - for instance compared to salary. I'd imagine that it plays a big role in making people stay.
It's hard to put a value on a high trust high quality of life society without living in it first
It's important that Denmark continues to attract high quality employers (such as in tech, big tech companies with American levels of pay).
I think our work ethic here seems to help with that too (Danes seem to be 100% switched on all the time at work but will not touch it once the day is over). At least the impression I get, which is of course subjective and just my experience, is that US company owners consider us more or at least as productive as folks on the west coast.
Personally, I hold the belief that these should not exist. They are a race to the bottom only the well educated can participate in.