I'm still not convinced that Genesis Mining is not a huge Ponzi scheme.
Only the future will show us the truth especially
after the halving, i think many weak/minor mining companies will collapse Why will they collapse? If the price goes up high enough, then miners will have a good price to work with. Remember, not long ago the price was sitting below $400 for quite a long time, and the difficulty kept going up. If the price goes up more towards the $800 level, then the price is basically doubled in a short time. Can't see miners complain about that. That's assuming there will be no massive crash directly after the block halving.
If there is indeed a massive crash after the block halving, then smaller miners will need to keep their mining operations up with the buffers that they have been building up throughout the year(s). But then again, if they do leave and cause the difficulty to drop, the lower difficulty on its turn will attract other miners, or it will make large mining farms simply put more machines to work. It's that simple.