Yes, this isn't exactly a comprehensive study, I just looked up some ballpark figures to get an idea and was really surprised by just how big the diff was betwe

Yes, this isn't exactly a comprehensive study, I just looked up some ballpark figures to get an idea and was really surprised by just how big the diff was between where consumer attention vs developer attention seemed to be. I'm not sure it makes sense to think of it in terms of number of 'useful' website vs mobile apps today by some definition of 'useful' though. Even if you expect the ratio of useful / not-useful to decline at 40M Android apps vs 400K you'd still expect that most of the top useful 100 apps in 3 years' time haven't been conceived yet and will be very different from today's.