nearly all the stakers are filled (and locked) with these Paycoins.
HashStakers are virtual products. If you put an XPY into a HashStaker you are giving the money to GAW and they can do whatever they please with it. They just have to slowly pay 0.97% of the money back each day and after 3 or 6 months give the original XPY back.
Only the XPY in your computer wallet is really owned by you. XPY in HashStakers is owned and used freely by Homero & Co.