If it's 10, 20, 30, this doesn't work. This is the entire point, that care work does not scale like manufacturing or farming or software or entertainment or...
I disagree. Frustration wouldn't come from having to care for 10-30 people, but from inadequate systems that would fail to facilitate effective care for this many people simultaneously.
Id bet if there was a reliable and effective means for 1 person to take care of 10-30 people, it wouldn't be a problem.
In summary, imho, the problem here isn't capacity to emotionally care for this many people, but means of taking care. I think the problem is we don't collectively invest enough resources (both material and cognitive) to figure out how to do something like this well.
If it's 10, 20, 30, this doesn't work. This is the entire point, that care work does not scale like manufacturing or farming or software or entertainment or...