bitcoin mining is not profitable enough, if we look at the expenses made by miners, it could be said that bitcoin is not profitable enough, because electricity costs are expensive, people who do mining have to spend a lot of capital, sometimes the profits they get are not in accordance with their expenses .
True, bitcoin mining is not profitable because the cost is higher than the results we get, I hope there is a combination of large factories such as Intel, Mitsubishi, Philips or others that can produce mining tools so that they are more effective and efficient