It isn't people who buy to sell it in the future. That's speculation. The early adopters of a currency are those who accept it for the goods and services they sell. How would one reward the true early adopters?
Takes little effort to accept it for goods and services. And companies doing so will do so for financial / PR reasons, they don't need rewarding. If they need rewarding, we all have a problem.
The early adoption stage with bitcoin has long gone.