Comment by mtgx

BBM had huge potential as well in the early days. Blackberry practically invented this "SMS-alternative" type of chat application. It was being quickly adopted in emerging markets as a replacement for SMS, which was much more expensive. However, Blackberry screwed that up by keeping BBM Blackberry-only for so long. The BBM should have been available on the iOS and Android stores (and probably on Symbian/Java) since 2009 at the latest (basically when Whatsapp was launched), and it would've dominated.