现在门槛不是很低了，但是现在没什么便宜的东西了。都爆炸了。各种代币的发展让以太实用性得以提现，价格也是节节攀高啊

Hourly payments are better for any investor as you are able to get back your investment in half the time and everything after that is just pure profit. It might be a case of some doublers to fail, but everyone has they're own plan and tactic to make it as sustainable and profitable as possible. So yes you can say that many fail because of this, but in the end that is only one small part of the real reason why program fails.