Well think about there's no difference between stakers or hosts (both kinds of players can get extremely wealthy) 300 Bils - try to store them in RSGP and it's quite hard. Anyone with 300Bil of wealth would have that amount in rares, not in GP, which brings to my previous point. Rares would have crashed, not spiked. And if you count his trades since he created the accounts it adds up to 400B+ and counting (He puts up an offer every few hours for another 10-20B, meaning he has to wait to get his hands on more GP). Probably waiting for his accounts to generate more.