Since the several decades before a few people decided to co-opt it for strategic political reasons. You apparently don’t remember the arguments over whether they should be called “free software” or “open source.” Both terms were already in use. I grew up downloading shareware, some of which was open source and some of which was not. It almost universally came with a limited use license and a request for some money if you used it. This is how Unix started too. Limited license with open source code. You can send your changes back to us but you can’t distribute them.

RMS has even published an essay talking about how the term “open source” is a poor choice because it has an obvious common sense definition that means “you can see the source.”