Disagree. Many minnows will tire after posting low valued post but if they notice they can get curation rewards by buying a little Steem they will stay active. Presumably they'll buy from a powering down whale, thus redistributing Steem. Eventually after curating awhile they may post on some of the hot topics. We need a reason for people to join and stay active.

That's what makes networks valuable. Attention. Activity. Not Content

Think tv ratings or active user metrics from Internet companies. Activity is value not content. Content is just one way of capturing attention. Voting / curation rewards is another. Let's incentivize what we want! Activity!