I’ve worked with organizations that employ people whose physical or mental condition makes it difficult to obtain/maintain a typical job. In all likelihood the type of work performed (stuffing event participant packets) was a net negative in a small view of value. The folks there seemed pretty happy to do what they did in a supportive setting with other folks who had similar life circumstances. That leads me to believe that there were larger value-concepts at play than what a cash amount can enumerate.
The value that any person can create is principally limited by imagination, not the free market. The wonderful thing about a moderately regulated free market is that the imagination of more people can be used to engage the value creation inherent in every person.