I think that's a more complicated issue because a bar is less independent. In the US I don't know if there's anywhere that you can sell alcohol without a licens

I think that's a more complicated issue because a bar is less independent. In the US I don't know if there's anywhere that you can sell alcohol without a license, and in any case there's a host of other rules that apply to brick and mortar businesses. Imagine a town square with spaces for market stalls. There are limited spaces. Thus if you take one, you are preventing someone else from taking one. They are public property and thus the public has a right to set terms for the business you conduct there. Now that analogy holds for other kinds of business too. Even if you "own" the building that your bar is in, you never really fully own real estate in most countries. There are limits on what you can use it for because it's connected (physically) to the rest of the world which belongs to other people. In contrast, my expectation is that I do fully own my brain and my thoughts and my attention and my intellectual output, and it's extremely disturbing to me that anyone thinks they should be able to compel me to devote those things to their purposes.