This all asks the question. To survive, must we fully envision the abolition of income-producing private property and of money, markets, capital and finance? If not, what is envisaged and/or advocated from a Capital as Power perspective?
As I see it, the capital as power approach argues that (1) capital is best understood as the quantification of organized power; and (2) this understanding alters the way we theorize, historicize, research and relate to capitalism in practice.
I think that the practical implications of this understanding — namely, whether to defend, reform or abolish capitalism — are open ended. These implications are influenced by the notion that capital is power, but that notion alone does not chart the path forward. For example, CasP anarchists might prefer a system that minimizes organized power; disillusioned neoliberals might argue that the best defense against the quest for power is invigorating capitalist competition; while CasP fascists might go for centralized state and racial power instead.
A side note. The chief capitalist quantities are those used for the creordering of power. But I think that quantities will remain necessary in any complex society, even egalitarian ones. It is difficult if not impossible to juggle the balls of complexity without them.