I'd tend to agree with the other comments that the hired out management companies would be a much better sales target since they have a real profit motive to efficiency gains. At best a neighborhood HOA is looking at periodically saving some time and being a bit better organized.
Problem is these who would benefit (residents) are often disconnected from those against it (the employees). You would need boards that really are sold on the benefit.
It's a decent industry my friend (not after this posting) makes ~300k a year working on it. However the race may be ending as these companies lock apartment managers into long complicated contracts. Not sure how many apartment managers at scale still need.