This also true. But the blockchain that creates the steem is coming from posting not resteeming. I see the danger, that we will be flooded with bots that only resteem the whole day. SteemIT is not so big in China and India at the moment. When the market gets there in full power there will be steemfarms. Just posting, upsteeming each other and commenting with mostly not valuable stuff.
It is for our own protection so to say. With paid resteem we would have a very high inflation and the price of steem will drop significantly