Gulden is the biggest threat to the status quo, poloniex the scam pushing exchange won't add Gulden for the same reason which is a good thing, same with cryptsy (when it was around). Yet anyone that uses Gulden knows what a gem it is.
ETH backers and the inner circle clearly have a lot of money to throw around, they have investors with large btc holdings using bots to push high trade volumes on exchanges like Poloniex and also investors who are borrowing at very low interest rates in the US and Europe and pumping it into ETH. ETH will crash hard if and when interest rates rise in the US or Europe.
ETH is a crypto illusion , the same as the over valuation of the stock markets in the world, people will play them and some will get out in time and the rest will get burnt.