[clapinton]

That's very true. Sometimes I wonder what the team behind WhatsApp does all day. They released Web and voice calling, but nothing since, and there's nothing to keep us expecting new things. No new features are added. Yes, they have to squash bugs and that is endless. Maybe work on a better infrastructure and make it more stable, but we'll never know about. Other than that, it's solid already and doesn't need anything else.

But then again, there's a paradox: if they do nothing and someone shows up that, for some reason, steals their customers, they can get in trouble, like Orkut fell and was "replaced" by Facebook. If they do something that breaks the experience, they can loose users to another player (recently in Brazil, WhatsApp was banned for 48 hours and lots of users signed up for Telegram. It wasn't WhatsApp's fault, yes, but it's just one more showing of how easily users migrate when they're not pleased).

So what do you do? You have to be careful with where you take your service. But standing still is just waiting for someone to come and stab you.