No, it literally is not the same thing, and is literally not about big tech at all. It is in fact very simple: Is the thing you're calling Open Source actually Open Source, or is it not? You don't get to change what words mean because you think they should change, or because your business model isn't compatible with their real meaning but you'd really like to use them anyways.

> It's the same thing.

Let's see how committed you are to that stance: just have them change it to the proposed wording. Should be no problem, since it's the same thing, right?