Earlier quoted context omitted.
As an outsider with admittedly limited knowledge. What would happen if you limited movement on a stock to be on the second? Would that not prevent this never ending race for faster and closer access. Something that doesn’t really seem to be adding value to society or the market.
who gets the priority in order fulfillment placed in that second? otherwise you have the same issue. the brokerage might also be tempted to make money by front running those trades since that have all the trades in front of them for a second before needing to be fulfilled
As for bad actors you are 100% right but assume they can be trusted or regulated to behave for now.
I’m just interested if removing HFT at less than minute scope as it would have been before PCs would actually impact the world negatively.