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
Thats quite true. Today coins like BTC, ETH etc are not profitable in terms of mining. They need specialized Hardware that eats too much electricity. Those who can afford such expensive BTC mining devices and electricity bills go for Bitcoin mining.
There are coins that are profitable and can be mined on ordinary devices like
MASS for instance. We have to search for such coins, since BTC mining is getting centralized to people with huge money.