This is definitely an aggressive strategy. It requires great militancy and constitutes an attack on the existing order. The strategy clearly recognizes that capitalism is the enemy and must be destroyed, but it is not a frontal attack aimed at overthrowing the system; it is an inside attack aimed at gutting it, while simultaneously replacing it with something better, something we want.
Thus, capitalist structures (corporations, governments, banks, schools, etc.) are not seized so much as simply abandoned. Capitalist relations are not fought so much as they are simply rejected. We stop participating in activities that support (finance, condone) the capitalist world and start participating in activities that build a new world while simultaneously undermining the old. We create a new pattern of social relations alongside capitalist ones, and then continually build and strengthen our new pattern while doing everything we can to weaken capitalist relations. In this way our new democratic, nonhierarchical, noncommodified relations can eventually overwhelm the capitalist relations and force them out of existence.