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 .
I think for those who are already professionals in mining, of course they have prepared many things, it is possible that they can cover all risks more readily so that they can gain profits from mining. From a general point of view, it does look very expensive in spending, and not to mention other risks, but there is definitely still a gap to get good results, it just needs very high capital.