I am a lot less experienced than you are. Even though I agree with the notion of openness in general, I don’t see not using Chrome as something that needs to be done. People were using IE back then and are using Chrome now because of the convenience and power these browsers provide. The web is still open. Provide more features, become faster, occupy less space, and the web is for yours to take.
The real issue would have been if a disruptive web browser comes, and no one adopts it because of the cost of transition. That, today, is not the case. Future assumptions can always be there, but does that mean we should disturb our today? Chrome may play the monopoly game. My girlfriend may cheat. The world may end.