In my modest opinion a typical shareholder invested $10,000 -...

In my modest opinion a typical shareholder invested $10,000 - $30,000. Now his investment worth $750 - $2000. As a result of this sellers might disappear for one or more of the following reasons:

1- Too much depressed to look at the value of his investment and how it vanished.
2- The shares do not worth much to sell.
3- No tax benefits from selling as my total investment still under water.
4- Some still think that the winning lottery letter from Nigeria is true.
5- Some (at least I know two) want to sell but there is no volume.
6- Some do not really care as they did not pay from their own hard working money for the shares (directors).

All the above are true for me except items #4 and #6.