People outside Google don't have the benefit of thinking of any particular project as being run only by the individuals currently working on it—those particular people may leave the company or change teams or move on to other projects. It's Google that's making it, and Google who will run it in the future, and we have to account for what Google might do with it 5, 10, 20 years from now.
No amount of the original Chrome team being excellent, well-intentioned, skilled, thoughtful makers can stop today's Chrome from cornering the market into an effective monopoly and leveraging that to try and benefit Google's ad products. That's one of the things you have to pay for when working for a large company—the support and knowledge and compensation are great boons but you don't get to just be yourself anymore, you're _Google_, your own work is always at risk of getting co-opted by others, and external people will view and criticize your work accordingly.