Yes workplaces are communist dictatorships. There’s one key difference between a workplace that is a communist dictatorship and a country that is one: you’re at that workplace by your own consent and you can leave.

Communism is okay when people can choose it willingly and opt out any time. When that communist system is competing with other communist systems for resources.

Also, the means of production are largely owned by workers in the United States, given how many companies offer stock to their employees, and how many people work for themselves, and how many people use their own tools, cars, computers, and kitchens to earn money.