Most of what the community is selling is because they invested early on. Not much is earned for free on here as you likely know. The stuff that is earned for free on here is very small and likely accounts for very little selling. I think you are missing my entire point. You are griping at people for selling what they invested in while giving Inc a free pass for dumping their millions of FREE coins that were largely supposed to go towards making steemit.com a success. And even then, them selling is not the issue, it's the fact they didn't plan ahead for a bear market (IE getting ads going much much sooner) and that the money they have spent hasn't been spent well at all considering there is almost nothing to show for it.
Overall, them selling steem is not sustainable in any way shape or form and continuing to do so now when there is little to no liquidity is likely going to contribute to them becoming insolvent sooner rather than later.
Increasing the numbers on here brings in the money via ads, google and facebook (as well as countless others) have shown that the numbers of people make the money.
However, expecting steem users and investors to not be selling steem is pretty foolish considering that is exactly how this place is designed to work and what brings in the people in the first place.