Re: My advice to Mozilla
Mozilla doesn't have to hope anything. Firefox works just fine on Linux and anything else that might replace XP and Windows 7 on business desktops (including the Windows 8 desktop).
The day Microsoft announces EOL for Windows 7 without having an upgrade path that doesn't involve massive costs (including retraining all a business's low-skill keyboard-pokers), is the day Microsoft will have signed its own death warrant.
If I hadn't been around while Digital self-destructed, I'd think it couldn't happen.
There's actually a decent successor to Windows 7 in Windows 8, if only it could be made to boot to desktop with a 7-compatible login /switch user screen and start menu, and TIKFAM made so it can be defaulted hidden and configured completely unavailable using AD policies. Doesn't actually look too hard, if Microsoft would only stop pushing TIKFAM at business users who know they absolutely don't want it in any shape or form.