One thing to say mining bitcoin consumes a large amount of electricity and it would take lots of equipment to manned the mining. There should be a development in making the cost of bitcoin lower; given that lower mining cost could yield a higher profit. However, it matters on trading and exchanges.
I think one of the factors which increases the cost of bitcoin mining is the high amount of electricity usage and I once saw an ICO(4new) who is planning to convert waste into electricity to support crypto mining and minimize the cost. I think it is a good project