Which one is bigger 10 years from now?

The seemingly obvious answer would of course be Instagram. But I'm resisting the urge to actually click either poll option. It seems like a realistic possibility that Instagram could go under at some point (perhaps because another giant arrives and displaces it), while SW keeps chugging along as usual. "The bigger they come, the harder they fall" type of thing. And if such a time comes that SW exists while Instagram doesn't, then SW would at that point be bigger.