Joseph Lubin, the cofounder of Ethereum, believes Ethereum will rise 1000x - implying a price of over $150,000 for ETH
Anything is possible, but I doubt Ethereum can get that high. It has historical issues and good competition.
Clearly his optimism is based on Bitcoin bullish sentiment, but I'd read his statement more like "I am confident in Ethereum and you should be too". And his confidence is biased.