I do agree with you that you need to gain the experience and take it to step by step. Leadership is one of the main important points for management but, being a good leadership only does not qualify you to be a manager. A lot of people think it is easy to do but it is not. In my industry, I have seen a lot of managers that they are great in one area but, they can not run the whole project and only think to form major perspective only not the whole picture. Which does not help the company. For example, they could be a great engineer manager but cannot be one of the company leaders. I believe the difference between strategy and tactics is that tactics is the way and/or the steps to get to the strategic goal, however, the strategy is on a bigger skill is the version of the company and focus that everyone needs to align with it.