It is an uncomfortable risk for many, to back a likely long term winner over a sure current cash cow. Even if their own estimates say they should go for it. See it all the time.
And to make it even more short sighted, the idea won't go away, it will just take a little longer and then pop up in competing colours.
And to make it even more short sighted, the idea won't go away, it will just take a little longer and then pop up in competing colours.