And where exactly should the money come from to give rewards? Will all those new Steemians buy Steem and start upvoting?
We already face the fact that most rewards go to a select group and there are many who feel very disappointed because it's hard for them to grow.
Out of those who do upvote most will go for the ones they know will receive high upvotes because they can earn by voting for them and not a newcomer.

You know just like me that no one likes to share. More Steemians will not pump the value of Steem and that's what is needed.