i think Bitcoin is only profitable if done at large scales. you must get expensive mining equipment and of course it consumes a lot of electricity monthly. Also its usually much more cost effective to buy Bitcoins with this money instead of using it to buy mining equipment.
I think different people have different choices. People don't want to take a big risk, so he chose to dig the bitcoin, which is a stable get the bitcoin, but it requires a lot of money to buy equipment, and its benefit of waste is slow, you need a long time to get some bitcoin.