And just what kind of measurable physical and mental effort is required to hit a menu in Windows?Fitts Law. Menu on top is much larger mouse target. Less physical and mental effort.
Physical and mental effort occurs when you have two 30" monitors, the cursor is at the bottom right corner of the secondary monitor, you want to access the menu, and you have an Apple mouse which means that even if the speed/acceleration is set to max you still need a mouse pad the size of a football field to cover the distance.
Yes, and Silverlight is a perfect illustration of why getting rid of Flash is about as easy as getting rid of Windows (Apple has been at it for 25 years and they're still only at 5% marketshare worldwide).*cough* Silverlight *cough*
And MS actually made quite a good implementation of Silverlight on OS X, and they publicly supported the Moonlight project to get silverlight working on Linux.
Another example is MP3 vs WMA/OGG/AAC. Or JPG/GIF vs PNG, XPS vs PDF, It doesn't matter how many alternatives there are and how superior they are, or if the dominant format is proprietary and the alternatives are open. People still stick with the old, established standard. When something has >90% penetration like Flash does, not even Microsoft can touch it. Silverlight has been around for a few years and it comes with Win7. Doesn't matter, you rarely see it outside microsoft.com and Paul Thurrott's Supersite for Paul Thurrott, Paul Thurrott, Paul Thurrott and Windows. Even MSN.com uses Flash.
Sure, the CD replaced vinyl and DVD replaced VHS. But those were major paradigm shifts in technology, where the advantages were so monumental you didn't hesitate for a split second. But that's not what Canvas is to Flash. That's more like trying to challenge VHS with Betamax after VHS has owned the market for 15 years. "I have 600 VHS tapes, why should we change?" "Because it's marginally better!"