The Soviet communists thought man was perfectible. This is wrong and was not presupposed in the question. Note: they didn't even know how to achieve the type of 'new man' described in your quotations.

I don't think that's a viable interpretation of all such behaviour. Mostly they don’t have the time, knowledge or ability to do certain things on their own.

@Erik I'm not so sure about that. Is blindly consuming branded goods and services related to ethics? Is a large proportion of financial decisions based on transparent information and personal responsibility? Do you think millions of people let their money go to oil and weapons industries because their ethical values say so?

Not everything is because of actual agents. Bad incentives and wrong information flows might do it.

I'm not asking for homogeneity of opinion; in fact, I want the opposite. As the question states, I want people to decide where to invest based on their own values.

(1) Removed. (2) This isn't really relevant. The economic effectiveness of a person with communist leanings would be limited by a large number of people with an interest in preventing dangerous behaviour. Further, such a person would still be useful in other ways and could get along with others provided he had no direct bad effect on them. Even if your fears were more founded, they aren't exactly within the scope of the question. (3) Sure, but are people actively reading these registries, using their knowledge etc?

@AlexP Edited with a slight clarification that should largely dissolve this doubt.