Yes, major desktop GUIs 20 yrs ago had more in common with each other than they have with web apps. They also had more in common with each other than with iOS a

Yes, major desktop GUIs 20 yrs ago had more in common with each other than they have with web apps. They also had more in common with each other than with iOS and Android phones. Yet today, most people in the more-developed economies use desktop apps, web apps on desktop, phone apps and web apps on phone every day. Some even have GUI apps in their cars and on their wrists. And among the new desktop apps, they have apps that work with touch UI or keyboard and/or mouse, that are available on multiple platforms with significant UI differences, and that have mobile versions. The result for most users is that they use a whole medley of different UIs daily and are far more flexible about UIs than back in the day when you were either a Mac person or a Windows person exclusively and all of your apps were native apps on your one machine. As clients continue to diversify, as Web apps spread, as companies like Apple keep bumping the Mac UI to lower and lower priority and claim Mac (which mustn't have touch)/iPod/iPhone/AppleWatch all need different UIs and all must have some sort of web support, and Google, Facebook, Twitter, and Amazon apps in their wide and ever-changing variety are used more and more...the demand for consistent UI in the fine details is not nearly as big an issue for most people as it used to be.