> Move to Europe and see how it might work.
The welfare states of Europe are unlikely to keep working much longer if too many people start moving there in order to benefit from them.
> Poor people can be productive.
I didn't mean to imply they couldn't be. They are distinct groups.
I meant to say that socialism frequently targets the poor with charity, and straight up demands that the unproductive be taken care of. "From each according to his ability, to each according to his needs." Socialism demands that you work for others at no benefit to yourself.
Nothing wrong with such charity, provided that people freely choose to engage in it. Socialism seeks to force the costs of it upon everyone whether they want it or not, turning it into a burden. It's easy to be the good guy when others are paying for it.
> Landlords may capture significant share of their income despite being absolutely unproductive.
Are landlords not responsible for the maintenance of the property?
> In such cases socialist policies may simply minimize inverse redistribution (exploitation).
Minimization of exploitation is just normal regulation, not socialism. I agree that this is necessary. Billionaires are a sign people are exploiting a lack of regulation in some area. Surveillance capitalism is my favorite example.