I don't really understand how you are making the conclusion of ethereum is scam from this!
there has been a big ICO which was about 70 million (more or less) ether tokens and a large part of it went to the developers and the foundation controls a lot of it.
https://etherscan.io/chart/ethersupplyDAILY NEW COUNS - 30,000 ETH * 330$ = 9,900,000$ - IT WILL GROWUP WITH PRICE