You will want to separate things.

For example, it would be bad for you as a business to rent every shelf, display, and card machine owned by your building owner. Because once you move, you will have to rebuy everything – and it will cost you not only time, but if you don’t find a display showcase equal or similar to yours, this might confuse your staff and customers, as they will have to learn how to navigate in your new store.

We have yet to mention that themes may offer additional capabilities, even custom post types, login, or e-commerce functions. This is a strategy.

While this might sound useful for the average user, it forever binds you to the current theme. It will make an extra effort to migrate these additional data to other add-ons, which you may not even find, forcing you to custom-develop it.