Earlier quoted context omitted.
Well, sort of. Open source was just a different name to describe free software, with the purpose of emphasizing the collaboration benefits this gives the business rather than the freedom it gives users. But this "business source" stuff is a different thing which is not open source at all.
What you’re saying doesn’t make sense at all. If that was true that would have been just some marketing campaign. There would have been no need to divert the attention from the free software foundation.
In other words, we had a thing that would benefit everyone in many ways, but some people didn't like the marketing message of "users deserve these rights!" so a complementary marketing message of "cheaper and higher-quality software through collaboration!" was needed to reach that group.
[0] https://en.wikipedia.org/wiki/History_of_free_and_open-sourc...