I am asking this because not everyone has made tangible profit for holding. Just like myself I end up selling at a loss most times just to solve a problem. Some might be lucky to buy at a low rate and within few weeks or months the price just pumps to their favour. This kept me wondering if Bitcoin is actually for every one or it is a scheme for selected individuals..
Looking at your topic title and your post to answer your question, I would say that no Bitcoin is not for everyone, especially not for those people who have no patience and can't control their emotions. It is true that not everyone earns profits by investing in Bitcoin but you also have to accept that Bitcoin is not the same as investing in other cryptocurrencies as a trader has to face. In this case, it can be seen that those who do short-term trading or altcoin trading are facing losses most of the time.
The people you're talking about who didn't actually make a profit in long term holding either made a mistake somewhere in their strategy, or else they couldn't control their emotions and suffered losses due to FOMO. . Moreover, if one manages DCA in long term, if one invests his lazy fund, I don't think he will have to face loss in future, one thing to remember is to create funds separately for use in an emergency so as not to touch the fund of long term holding in an emergency situation. Moreover, if your suggestion is short term trading or mid term trading, then here you have to have knowledge about technical analysis, otherwise you will see that the possibility of facing loss here is highest.