Two of the biggest data points for editing products - their popularity and growth rate - don't exist before you launch. I'm sure Google doesn't launch products

Two of the biggest data points for editing products - their popularity and growth rate - don't exist before you launch. I'm sure Google doesn't launch products it believes will be unpopular, so whatever launches and ends up unpopular, that data point was a surprise. It would be nice if you could tell which products will take off before you build them - it would save everyone a lot of trouble.