It's a good idea to invest for long term with patience but the patience is what is lacking and that always makes many investors to want quick gains. There are lots of quality projects part of which you have mentioned but they are simply long terms and requires patience.
For those who require money often and cannot stay invested for long then making quick bucks or riding with the bull is the only option for them as to make quick money and sell out. As holding long for them and if it falls then they end up losing and might not be able to hold for long. So under those circumstances it is the best way wherever you make some profits just exit.