The problem is the percentage use is so unbalanced right now (IMO due to Google and Microsoft using their other platforms to drive installing their browsers) that I now run across sites that only function in Chrome properly. A lot of devs feel that "Eh, I've targeted the 90+%, why do the rest matter?" and that is how you hand control of web standards to Google. The usage ratio needs to be more balanced to prevent a browser monopoly, hence people trying to ensure there continues to be a choice.