You raise a good point, though; WebP certainly did (and continues to do) well in some areas, but at the cost of lacking in others. Moreover, when considering a format for adoption, one should compare it with other candidates for adoption, too. And years before WebP gained widespread support in browsers, it had competition from other interesting formats like FLIF, which addressed some of its flaws, and I have to wonder how it compares to the even older JPEG 2000.