Website's source code is not open source, even though you can inspect it. If you have a public repository with your code on GitHub, everyone can see the code.

Website's source code is not open source, even though you can inspect it. If you have a public repository with your code on GitHub, everyone can see the code. But they do not have the right to use the same code in a commercial manner, without you specifying a license for your code, that says they can.