Microsoft is officially giving up on an independent shared platform for the internet. By adopting Chromium, Microsoft hands over control of even more of online life to Google.

This may sound melodramatic, but it’s not. The “browser engines” — Chromium from Google and Gecko Quantum from Mozilla — are “inside baseball” pieces of software that actually determine a great deal of what each of us can do online. They determine core capabilities such as which content we as consumers can see, how secure we are when we watch content, and how much control we have over what websites and services can do to us. Microsoft’s decision gives Google more ability to single-handedly decide what possibilities are available to each one of us.

From a business point of view Microsoft’s decision may well make sense. Google is so close to almost complete control of the infrastructure of our online lives that it may not be profitable to continue to fight this. The interests of Microsoft’s shareholders may well be served by giving up on the freedom and choice that the internet once offered us. Google is a fierce competitor with highly talented employees and a monopolistic hold on unique assets. Google’s dominance across search, advertising, smartphones, and data capture creates a vastly tilted playing field that works against the rest of us.

From a social, civic and individual empowerment perspective ceding control of fundamental online infrastructure to a single company is terrible. This is why Mozilla exists. We compete with Google not because it’s a good business opportunity. We compete with Google because the health of the internet and online life depend on competition and choice. They depend on consumers being able to decide we want something better and to take action.

Will Microsoft’s decision make it harder for Firefox to prosper? It could. Making Google more powerful is risky on many fronts. And a big part of the answer depends on what the web developers and businesses who create services and websites do. If one product like Chromium has enough market share, then it becomes easier for web developers and businesses to decide not to worry if their services and sites work with anything other than Chromium. That’s what happened when Microsoft had a monopoly on browsers in the early 2000s before Firefox was released. And it could happen again.

If you care about what’s happening with online life today, take another look at Firefox. It’s radically better than it was 18 months ago — Firefox once again holds its own when it comes to speed and performance. Try Firefox as your default browser for a week and then decide. Making Firefox stronger won’t solve all the problems of online life — browsers are only one part of the equation. But if you find Firefox is a good product for you, then your use makes Firefox stronger. Your use helps web developers and businesses think beyond Chrome. And this helps Firefox and Mozilla make overall life on the internet better — more choice, more security options, more competition.