Good point of view. From an ATM point of view, there is no need to rush other than verifying the user authenticity and available funds. Any double/triple/quadruple requests to withdraw funds within a short amount of time can be delayed since they would likely indicate malicious actors.
For stock exchanges you are absolutely correct. I remember many years ago paying so much extra for the fastest internet access and sub-second delay access to our local stock exchange. Even so it was still slower (lag) when compared to those with offices placed very close to the stock exchange building/infrastruture at that time.
