Marshall Macluhan said sometime ago,
Steve Jobs, pulled a Macluhan here,
he invented a device (iPhone) that made several devices obsolete. One of them is the DSLR camera together with smaller format cameras for the masses.
Don't forget Canon wants to sell a lot of cameras, to alot of people. All these people are now having cameras, HD quality cameras,that can produce video! as a result of buying a phone.
Enter the global economic crisis. No one is going to spend 2000+euros for a hobby camera. Not where I come from.
So who will buy all these top of the line DSLRs; put the lense modifications that allow you to keep your camera and use all type of lenses and what do you get? A drop in sales.
Magic Lantern actually pushes MARK III sales, so thats why you dont hear Canon complaining..just an opinion.
Sales are going to drop, until CANON NIKON SONY can produce an Iphone size DSLR CAMERA.... :D