The world should have learned what a great presentation is and what presentation software should be like. And yet nearly 20 years later No Slides or presentation software, including MS Powerpoint is even at the level of Keynote in 2007.
If there is one thing I learned, is that even if you ask people to copy, making a 100% exact replica in itself is hard enough. Most people cant even copy exact and they ignore the small details. They copy and make things worse much like Microsoft in the 90s and 00s.
And this at the end may come down to taste. Just like Stave Jobs said, the biggest problem with Microsoft is that they have no taste. They do not have the craftsmanship or the product genius to make a call on what is a great product or a bad product. Instead a great product is distilled into one that sell or not, by the sales and marketing people, which is the current Apple.