I do corperate IT work. Firefox & Chrome cannot be managed while IE is integrated with Active Directory. Honestly it is a pain when the end user gets tricked into installing Chrome and now none of their work websites function due to needing a real Microsoft Active X runtime.
Your computer won't boot/Windows corrupted? Sorry you just lost all your history & bookmarks if you used IE I could have transfered them to your new computer for you (IE stores them in a folder, Firefox you can but it is a pain, Chrome you are hosed.)