The funny thing about communism is that there's only a single thing that stands in the way of it working and that is the individual and all the things that come with it.

If you somehow managed to remove the individual in favor of the collective it'd be easy. If for one moment we put on our ultra imagination hats and say that everyone was on board with putting the collective before themselves then communism wouldn't be too different from what we have today. The main difference would of course be that people would do their jobs out of a sense of duty and commitment to their collective as opposed to for personal winnings.

With that out of the way, it wouldn't work and it won't ever work on any significant scale. Unless you get a mind control cap, removing the individual is impossible and why communism has failed every single time. All it takes is one person who wants more than to just be another cog in the machine to get the ball rolling and inevitably collapse the entire shabang.