I don’t think many people on lemmy conflate marxism with leninism outside of .ml, and even there folks seems to see leninism as something on top of marxism and not inherently mixed.
And then we also have people who feel stalinist style “communo facism” would work well because everyone you like will be fed and everyone you don’t like will be dead. I don’t think anyone ever liked those people, including themselves.
I believe that it’s much less about profits and much more about power. Being unbeliveably wealthy in a world where everyone have their every need satisfied is less favourable for a megalomaniac than being believeably wealthy in a world where everyone is desperate. People rarely desire expensive jewelery or other (relative) luxuries for their own satisfaction, usually it’s used to signify wealth and show power. What use would those extremely rich psychopaths have for their money if there was no human black market to buy a child sex slave from? Where would they get their dose of praise and submission if no one desperately wished to change their dire living conditions and was willing to licktheir boots for that chance? I think capitalism was designed specifically for this purpose, and with class divide growing ever wider, it fulfills it excellently.