Except that Chrome itself emerged as an "alternative implementation". We had Mosaic which lost to Netscape which lost to IE which lost to Firefox which lost (is

Except that Chrome itself emerged as an "alternative implementation". We had Mosaic which lost to Netscape which lost to IE which lost to Firefox which lost (ish) to Chrome. And in the mobile space things are still kind of wild. If anything Chrome is an exception to the article's "Alternative Implementation Problem"; what started as Konquerer, an alternative browser, eventually mutated into the most common desktop browser currently in use.