Yes, Jason is trying to get people to leave wikia. (He has never approached us!) Given the licenses of most wikis on Wikia, he doesn’t really need to approach anyone: He can just copy the whole thing on to Mahalo, find some one willing to curate and be done with it. If he is only offering half the money to one person, large wikis aren’t going to move. If he doesn’t have the domain, there isn’t going to be a lot of money unless he can squeeze Wikia and beat them on SEO for the same content.
It will be interesting to see how this plays out.
Edited to add: Linked to Jason’s twitter account and the leavewikia account on #wikia on irc.freenode.net to mostly complain about Jason’s lack of understanding of wiki communities and fan communities. The result: [14:42] -ChanServ- You have been devoiced on #wikia by Dantman (Nadir_Seen_Fire) .