Unity of Labor and Collectivization of Property

According to Marx-Engels, social Atomization is the result of Division of Labor.  However, as has been previously discussed, Division of Labor entails Unity of Labor, and, hence, is, more accurately, Organization of Labor.  In contrast, as is expressed in Smith's Egoism, Atomization can be instilled independently of the context of Labor.  Thus, to the contrary of their thesis, Unity of Labor, e. g. a work crew, can contrast sharply with prevailing Atomism, and, indeed, that contrast is often the signal distinction between the Working and the Ownership classes.  Accordingly, it is that solidarity, expressed as collective ownership, that can be conceived as defining the Revolutionary class, in its ascension to power, rather than its class-lessness, as Marx-Engels propose.