Socialism leads to the politicization of society. Socialism, at least its Marxist version, says its The Marxists observe that once you allow private property in the means of production, you allow differences. If I own resource A, then you do not own it and our relationship toward resource A becomes different and unequal. By abolishing private property in the means of production with one stroke, say the Marxists, everyone becomes co-owner of everything. This reflects everyone's equal standing as a human being.
Declaring everyone a co-owner of everything only nominally solves differences in ownership. It does not solve the real underlying problem: there remain differences in the power to control what is done with resources.
In a socialized economy, this isn't true because there is no longer any owner. Nonetheless the problem of control remains. Who is going to decide what is to be done with what? Under socialism, there is only one way: people settle their disagreements over the control of property by superimposing one will upon another. As long as there are differences, people will settle them through political means.
Under such a system, people will have to spend less time and effort developing their productive skills and more time and effort improving their political talents.
They no longer cultivate the ability to anticipate situations of scarcity to take up productive opportunities, to be aware of technological possibilities, to anticipate changes in consumer demand, and to develop strategies of marketing. They no longer have to be able to initiate, to work, and to respond to the needs of others.
Instead, people develop the ability to assemble public support for their own position and opinion through means of persuasion, demagoguery, and intrigue, through promises, bribes, and threats. Different people rise to the top under socialism than under capitalism. The higher on the socialist hierarchy you look, the more you will find people who are too incompetent to do the job they are supposed to do.
All the impoverishing effects of socialism are with us in the U.S.: reduced levels of investment and saving, the misallocation of resources, the over-utilization and vandalization of factors of production, and the inferior quality of products and services.