Simon is correct. There are a few Quora threads about this with information from insiders. Kellan Elliot-McCrea has the most complete answers about the failure

Simon is correct. There are a few Quora threads about this with information from insiders. Kellan Elliot-McCrea has the most complete answers about the failure to jump to mobile: https://qr.ae/pGzfWU https://qr.ae/pGzfWU https://qr.ae/pGzfWd https://qr.ae/pGzfWd And here's another thread, started by a former Yahoo executive, Ravi Dronamraju, with lots of replies from the founders of various acquired startups (del.icio.us, Flickr, MyBlogLog, etc). It is very illuminating. They're showing you in public what the discussion was often like in private. https://qr.ae/pGzfiw https://qr.ae/pGzfiw