People looking to increase their steem holdings so they can have larger Hive holdings? Not really sure, and not even sure when if the snap shot has been taken yet of account balances. But from hiveio:
The Hive airdrop will only be performed on the current version of the Steem blockchain (as of the date of this post).
Which was the 17th.
Important notes for cryptocurrency exchanges that list STEEM
If at all possible, please let us know by Thursday, March 19 if you will or will not be participating in the airdrop.
So we will see on Friday.
I have a feeling this is something more than that, tbh. (buggered if know what, though..)
The snapshot is just before the fork, so folks can buy more now.