In my opinion is same like big companies ,there are those big one like apple and samsung ans small one like alview ,put at a point if people invest in the small ones ,they can get big like huawei did

. At one point people will lose intrest in bitcoin and move to and other currency.
Cryptocurrencies are not stocks, you dont invest buying coins so the Cryptocurrencies can use more money for growing business, you buy the coin if you see some value in the coin so you can use it (spend, sell)