I think people with the first batches will be able to make 3000-5000$us for the first month of use. Then it will drop fast to 2200$ then 1500$us etc...
This is why im saying, that the 3rd batch from Bitmain will be useless. Even if you buy 10 machines, you will end up making 10k a month or something.
Imagine now, the difficulty is at 300,000-500,000 . And this is the result of hundreds of miners mining with 150mh/s , 300mhs and 900mhs miners mostly...
Imagine now , you have over 600 machines deployed in september, and each deliver not 150, 300, or 900 , but 15,000 mhs each.....
Go figure....
Tens of thousands of miners. From DR2 to Baikal Giants. They will mostly drop out when difficulty hits 2 million. I think the difficulty will spike, but not as fast as you think. According to suprnova the global hashrate is over 12 million megahash. If we assume an average of 450 Mh/s per miner, that makes around 27,000 miners that will become obsolete. If the first batch is 2k units and 15k Mh, global hashrate will triple to 30 million if all legacy miners drop off.