Actually I think it is not true. What is happening is that firms who can afford are investing in not necessary technology to be executed faster then others. Tha

Actually I think it is not true. What is happening is that firms who can afford are investing in not necessary technology to be executed faster then others. That just creates a huge market barrier and a monopoly. Only the trading firms and in some way exchanges are creating value of it. For the normal user it doesn't matter if spreads or the orderbook is updated in a nano or microsecond.