For ego maybe but its not cost effective:
It cost maunfacturers $500-600 per TH now and thats only 1.5w/gh performance, KNC cant even buy at price because they dont manufacture the chips themselves. Prob cost them $1000 TH to build their machines.
Samsonn25, no bitcoin ASIC miner company manufactures their own chips. They all have similar design and foundry costs.
Companies in China can design and manufacture faster for themselves. Such as bitmain and others. Less r and d now because they improve what they can from previous gen. Not trying to be pioneers as time is too much of a risk factor.