That would be considered a Ponzi scheme

Amount of steem doesn't impact how much you will earn. You can power up with that steem and get a higher voting power, but the downside is you won't be able to power down for another 2 years after powering up.
Ok, so having more steem gives me the ability to influence how much other users make by upvoting and so on, but my own earnings from posting, commenting and curating is unaffected? So no long term strategy involves having to buy extra currency to make it, got it!

Thanks.