The ultimate feature for hackers is how hackable something is. That means it is easier to develop the version for hackers first, and then package a specific version for end-users. Therefore, if they do develop a hackable browser and allow everybody to innovate on it, they may well be in their way to create the next best browser.

This paradox is similar to creating a new microcomputer only for hackers (Apple I/II) which in turns allows them to develop cool stuff on it (Visicalc) which in turn makes it the standard for all users.