It is open for me to use as I please. And I don't want to destroy their business. I can understand your ideological drive, but in reality it doesn't matter until you behave unethically and steal their intellectual property. Do you want that?
Sure, but that's not what "open source" means.
I mean I can go around calling C a functional programming language because it functions and I can build functioning programs with it... but that's not what the word means in anyone's discourse besides yours. I mean I support your freedom of speech, but also mine in saying your usage is disingenuous.