How is that a ponzi scheme? seems like a bigger proof of stake if anything. Also, you can sell out your drk used for MN at any time you wish.
Let me show you:
"Pyramid promotional scheme" means any Masternodes are a plan or operation by which a participant gives consideration for the opportunity to receive compensation which is derived primarily from any person's introduction of other persons into participation in the plan or operation rather than from the sale of goods, services or intangible property by the participant or other persons introduced into the plan or operation.
http://www.azleg.state.az.us/FormatDocument.asp?inDoc=/ars/44/01731.htm&Title=44&DocType=ARSBTW LOL 'superlegitaccount.'

lol yeah I'm pretty proud of the name for my trollaccount

Now back on topic, I don't see the ponzi man. By your logic proof of stakes are ponzies too? Masternodes are basically proof of stake with a minimum amount of network weight, in this case 1000drk.