"Since effective altruism is committed to whatever would maximise the social good, it might for example turn out to support anti-capitalist revolution." (Srinivasan 2015)
In this peer-reviewed article for Moral Philosophy and Politics, I explore this suggestion. This connects with my EA forum piece 'Why not socialism?' but is more thorough and more focused on longtermism in particular.
ABSTRACT: Capitalism is defined as the economic structure in which decisions over production are largely made by or on behalf of individuals in virtue of their private property ownership, subject to the incentives and constraints of market competition. In this paper, I will argue that considerations of long-term welfare, such as those developed by Greaves and MacAskill (2021), support anticapitalism in a weak sense (reducing the extent to which the economy is capitalistic) and perhaps support anticapitalism in a stronger sense (establishing an alternative economic structure in which capitalism is not predominant). I hope to encourage longtermists to give anticapitalism serious consideration, and to encourage anticapitalists to pursue criticisms of capitalism’s efficiency as well as its injustices.
Yeah sorry, to emphasise further, I’m referring to the position where we should place strong restrictions on wealth accumulation when it leads to market failures. The difference between this and the mainstream (in this conception) is that mainstream views take more of a siloed approach to these outcomes, and prefer income taxes or laws to remedy them.
An anticapitalist view contrasts with this by identifying wealth accumulation / concentrated ownership of the means of production as a root cause of these issues and works to restrain it in a more preventative capacity. As you identified, such a view typically advocates for policies like wealth taxes, worker co-determination on boards, and high tax surveillance.
Also loosely on your claim that anticapitalism is incompatible with EA because anticapitalists foreground equality over utility—I disagree. First, EA is scoped to ‘altruism’, not to ‘all policy worldwide’, so a view that aims to maximise altruism also maximises equality under regular conditions. Second, it’s not necessarily the case that there is a tradeoff between equality and global utility, and highly socialist societies such as the Scandis enjoy both higher equality and higher utility than more capitalist countries such as the United States or the UK.
(I’ve read Piketty and don’t remember him ever suggesting he would trade one for the other; can’t speak to the other authors you cite)