What do you mean?
For example, you buy the software and with it you also get the source code.
If we're using the common definition that everyone in the industry uses, then it actually does.
In fact, Open source was coined in 1998 because we needed a term with a precise and well defined meaning.
I don't know anyone who uses the term open source in the way you describe.
Additionally, creative commons do not recommend their license for source code and software works because software has specific needs that cc was not developed with in mind.