I agree 100%.

The way that things are set up is that authors get most of the rewards. Consider the reward pool when there are 600K daily active users versus 60K....all posting content....there is no way the top 300 accounts can come close to posting at that rate.

So like you said, if they want to maintain their influence, they must buy the tokens on the open exchanges. That is still going to be difficult to keep pace but it is possible with enough money.

Either way, another few million users will spread out the reward pool a great deal more.