Who are they who still consider btc as a failed project?  BTC will certainly double in value from its current value when the market booms.  Those who think BTC is a failed project will surely regret it.  There are many investors who don't care about BTC price but they care about saving BTC. And they invest in Bitcoin for long term.  Although the market is always unpredictable, there is no reason for anyone to despair of investing in Bitcoin.  Of course Bitcoin will do well in the future.