Op stated this topic last few years ago or in the year of 2013 and for sure if they bought bitcoin at 2013 and hold it until today they can earn a lot of profit because the price of bitcoin is very high compared to the previous price last few years. For me I dont think bitcoin price will reach 50k dollars even you wait more years because for me the highest price of butcoin is around 20k dollars or maybe 30 k dollars.