OpenSource may not disallow it

[HDE Weird]

Sorry it seems that I did something wrong, so I have to repeat my question.

One question about OpenSource and its definition. If I did understand it correctly, an OpenSource license does not ever disallow people doing anything using OpenSource software, otherwise it is not an OpenSource license. So, an OpenSource license may not disallow users breking the OpenSource license, like including parts of OpenSource code in commercial closed-source programs, if they do it using open-source programs. Right?