The $150K is merely the upper resistance trend line of Bitcoin's Logarithmic Growth Curves, this is far from a prediction based on fundamentals imo, but caculating exponential growth with lowering returns:

Bitcoin reaching JP Morgan's target is simply the most likely outcome if price continues to move higher this year. I'd say it's nothing new, they simply studied logarithmic growth, as it has been a reliable indicator or tops and (relative) bottoms in the market. This also remains a conservative target, given that in March 2020 price dropped below logarithmic support by a good 50% (for the first time), therefore it's possible to argue that it's likely to break above resistance briefly as well. If at the end of the current bull trend price goes as wild as it did during the covid dump, then a 50% move above the log growth resistance trend-line would be $225K for reference sake.