Red China used to marshall thousands of people to create massive earthworks like dams built with dirt transported by the bucket. People had no choice in the matter. Unless catching a bullet in the head if you don't feel like doing the task is considered a choice. The Soviet Union did similar, from communal farms to sending Russians out to settle remote areas of Siberia, all by force. A lot of people in these efforts died, and the end result of what they were doing often weren't raving successes. Siberia is still cold, there are no booming cities, and the only people who ever enjoyed living there are the indigenous who got their cultures ruined by imported Russification so now life out there sucks for them too.
Now you could argue that these weren't true Communist countries, so therefore those projects weren't communist. But if they really were truly communist, and the community decided it wanted to build a damn across the Yangtze River and they had minimal tools, then those people would be marshalled to do that work. So same difference basically.
The problem with Communism is it there is no incentive to excel, because you do the bare minimum, and you get just as much as somebody busting their ass. So why try harder when someone right next to you on the assembly line is just being lazy but benefitting just as much?
With Capitalism, there is an insensitive to excel and make profit. Therefore people tend to produce more. And the leftover excess is used to help out those who are less capable.
Sure, it's far from perfect, and there's a lot of problems, and people do get exploited as well, and there is a big poverty stricken class, and yes, we've all had lazy coworkers, but the bottom line is at least at least there's room for improvement.
