As a small trader, you get access to special lower prices that a hedge fund can't get. Your broker will be routing your order to a wholesaler who will fill it at lower prices (ie, narrower spreads) than you would get on the open market, because they have a legal obligation to not screw you over.
You can request that they route it to anywhere you want, and they are legally obligated to do it if you ask, but you really don't want to do that. Unless you like giving money away of course.
(Also, you don't seem to understand basic market mechanics. You use words like "scraped" or "picked up" which are nonsensical in context.)
IEX recently suggested that retail investors should request their broker to route their orders to IEX, for which they got criticised very harshly. And rightly so.