I think all projects that are based on me have a good purpose or there is no investment intention, maybe what happens when they encounter problems and are difficult to complete and in the end their product is defective or fails so they choose to leave it.
A good project always has a clear target, when they encounter a problem of course the best solution is not to make a scam project, and the most important thing is that before making a project it must be supported financially strong and for the current size I have noticed in many discussions is a capital of at least $ 200 million .
If bitcoin required 200 million dollars for its development then most likely it would not have been even released yet, do not deceive yourself, those developers do not need anywhere near that amount of money to create their coins, and if they do then they do not know what they are doing, Satoshi developed bitcoin on his own and he changed the world, if a bunch of developers cannot do better than him under better circumstances then you know their project is worth nothing at all.