>I think given the size and wealth of Google, this is entirely inappropriate and people shouldn't be contributing to it, because it will only encourage this parasitic and exploitative behaviour.

So you would rather have chromium be closed source, or for people to fix the bug but hoard the patches? Do you hate the idea of google benefiting from your work so much that you're willing screw over yourself (in the form of having to maintain the bugfixes yourself) and others (because they don't get the bugfixes) in the process? Are you also against contributing improvements to other OSS projects (eg. linux kernel) because corporations might benefit from it and "gives them free R&D and labour"?

The majority of work on Chromium is done by engineers on Google's payroll.

There certainly are OSS projects out there where the majority of work is done by volunteers and where companies profit from their labor. This isn't really one of them, at least not in the way you are describing it.

Applying one "truth" to the entire world generally means that you're simplifying things to such a degree that they become meaningless or even ridiculous parodies of themselves.

I feel like that this might be what you are doing here.

There is a entire ecosystem because of Chromium.

I'd argue it's one of the least "parasitic" corporate OSS project.