They pay for it. And that's a can of worms. What are they paying for by the time they receive it. What is the physical point of receiving data? Which exchan

They pay for it. And that's a can of worms. What are they paying for by the time they receive it. What is the physical point of receiving data? Which exchange is the data received from? Central data clearing house of data? Real time is a concept that doesn't exist in live data. How real-time is a concept.