Well it makes sense. IF you can not use your own rendering engine, you are kind of going to gimp your own program. The only use would be to at least have your bookmarks/history synced
@ cryogenic: current news about the EU fining MS are just the aftermath of a process started a really log time ago, when Windows + IE really DID have kind of a monopoly (At a time before Firefox, long before Chrome; Apple at that time struggling to stay afloat and Linux far away from today's point-and-click distributions like Ubuntu. Yeah, I feel old.)