Why does someone have to buy rigs from Bitmain and/or Avalon to increase the network hash rate? Can Bitmain and/or Avalon not add this hash rate themselves without selling to someone else? Can Bitmain and/or Avalon not make one last push before the block halving? Hell, those of us who bought their rigs paid 3, 4 or maybe 5 times as much as their cost to make them. Which means they could make 3 for themselves [at a minimum] for every one (1) they sell to us. They could set up their own "Unknown" pool to mine solo from without adding it to their "public" pool.
42.000 antminer S7 in a month? i sounds a lot of miners...