To design well decoupled components, it helps to reflect about: “if I would want to remove this business concept, by deleting its component root folder would all of the business concept code be removed and would the remaining application not break?” If the answer is yes, then we have a well decoupled component.
For example, in a Command Bus architecture the command and the handler do not work one without the other, they are conceptually and functionally bound together, so if we would need to remove that logic, we would remove them both, and if they are in the same place, we just remove one folder (the problem we are trying to solve is not about deleting code, it’s about having decoupled and cohesive code, but it helps to think in these terms). So to follow the CCP and the CRP, a command should be in the same folder as its handler.