Comment by evanelias

> if you believe it is unethical for someone to re-license your Apache code with their own proprietary license, then it shouldn't have an Apache license.

It's not just unethical, it is clearly illegal.

If you don't own the copyright to a program's source code, you cannot legally relicense that source code! Same holds true for any other copyrightable creative work which can be licensed. This is a very clear case of copyright infringement.

Nothing in the Apache license permits the licensee to relicense the source code (meaning, entirely replace the license with a different one).

It does permit you to build derivative enterprise products, and you have no obligation to keep the source code open for derivative products. But if you do release the source code for your derivative product, any original unmodified Apache licensed portion of the code retains that license and you cannot remove it if you aren't the copyright holder for that original work.