The original value-proposal for Chrome was: The more people browse the web in general, the more Google profits. So the mere existence of a good free, fast, and safe browser would inherently benefit Google at large in general. And that rationale is why we get to have Chromium at all.

Obviously things have evolved quite a bit since then, but I think the general pitch that Chrome is primarily a value-multiplier for the org at large, rather than a direct value generator is still broadly the case, and it's really not clear to me that it can exist as anything else without a fundamental reassessment of what it's trying to accomplish.