You can't really make money selling browsers, utilities, or anything much more on the PC. You may be able to make some money selling software such as Office, Photoshops, and theres a lot of money business solutions, but I can't imagine the typical end user spends a lot on software and I'd imagine that market is typically shriking. Games are an exception though, and theres no reason to think they wouldn't be an exception on *nix.
No announcement yet.
id Software: Linux Hasn't Produced Positive Results