There was speculation Starlink could be used for HFT once it gets laser links, but this would even beat that since you don't need to travel up and down an extra

There was speculation Starlink could be used for HFT once it gets laser links, but this would even beat that since you don't need to travel up and down an extra 500 miles, plus any buffering in the satellites. Starlink would have more bandwidth, but you probably don't need much for HFT.