There is more than one though they work at different latencies. If the fastest one goes down then all the data will go the next best route. Generation 2 starlink satellites are meant to be faster than cable as the satellites will talk to each other in the vacuum of space by laser. This may be...
Most people have their vps next to the exchange they are trading in Chicago or New York. See www.speedytradingservers.com www.chartvps.com www.ninjamobiletrader.com
With IB, when you want to do 500 option contracts, you can call their desk in Chicago and they will shop the order off market. Search on the IB website for large order desk.
I am trying to get them to change the Tesla data for the split on the 24th of august but it has taken them two weeks to understand the issue. They missed a day so the chart looks ridiculous wit h prices still at $900 for that day.