Avi K, thanks for the correction Bava Batra 9a, Adam Hashuv indeed. Shita Mekubetzet says Adam Hashuv = Talmkid Chacham + community parnas. So, he seems not interested in the opinions of unlearned merchants and members of kollel, only those who are both learn and are in business. [O, horror ]. Rambam says “Haham Hasuv”, H’M 231:28 uses a similar term “haham hashuv mamono al ha tzibur” …
R Moshe is mentioning these halakhot in the context of allowing modern labor unions. Not clear to me whether members of the union are same as independent artisans. Maybe in “skilled labor”.
I see R Auerbach quoted as referring similarly that as in our days talmidei chachamim do not involve themselves in business affairs, then “it is as if there is no adam hashuv”. This is unclear, as according to definitions above adam hashuv is not just talmid chacham but also parnas, so it is literally there are no adam hashuvim, not “as if”.
This leads to a question – is it a good/bad/pareve thing that we do not have an “adam hashuv” people? Gemorah seems to imply that it is better to have them. so, should people in yeshiva go into business, or should business people learn more to make more hoshuve people?