Bitcoin mining costs a lot of electricity , time and cost of machines. But the reward is getting less and less. In recent years the exploitation cost has increased significantly . If bitcoin prices continue to decline , this can prevent many people mine bitcoin
Many people cannot mine bitcoin anymore, you need specialized hardware that is very expensive and you need cheap electricity costs, so the majority of bitcoin users cannot mine bitcoin at all, besides miners have gotten such profits in the past that they should be able to operate for a loss for some time and if they are unable to do so then other miners will displaced them or just absorb them, this is not really a complex issue besides it is not like we are close to the point when miners will not be profitable anymore.