The difficulty arises in taking as fixed or necessary the business unit of 3 persons - one difficult to manage in a manner that stresses collectivity and democracy. If the latter values are to be given a high priority, then size of enterprise becomes a variable that would need to accommodate to those values' high priority. So if (and it is an "if") a three person business enterprise of the sort you sketch were resistant to an effective democratic organization, then there might need to be rather a different way to organize the enterprise including its size etc. Remember too that the debate rages inside capitalism whether its rules and procedures can or cannot accommodate mega-corporations so that trust-busting must recur etc.