OP, you don't understand how Bitcoin works. Owning hashing power does not mean you control the network. Miners do not control the network, full nodes do. Meaning nodes which maintain the blockchain and relay new blocks and new transactions.
The only reason why 3 is bad is because it lowers the bar for one of these companies to start a 51% attack if they desired to destroy Bitcoin and their investment with it.
The only reason why 3 is bad is because it lowers the bar for one of these companies to start a 51% attack if they desired to destroy Bitcoin and their investment with it.
Miners don't control the network? Only full nodes do? What???
Sorry, but every miner out there is securing the blockchain. No one "controls" the network. Only a miner with 51% can manipulate the network.
+1
ASICS are not Killing Bitcoin but securing the network more and more and this will increase the value
http://www.youtube.com/watch?v=uIivL1TYV1g