Yeah, that would make sense. There are links that have been built by various HFT firms and banks [0] [1] that use microwaves instead of fiber buried in the grou

Yeah, that would make sense. There are links that have been built by various HFT firms and banks [0] [1] that use microwaves instead of fiber buried in the ground simply because of this speed-of-light-in-media limitation. They can shave a few hundred nanoseconds (or something, I don't want to do the math right now) because of a higher signal propagation speed and get a trade in faster than their competitors. Same thing with a laser link like this. Edit: cf. [0] https://arstechnica.com/information-technology/2016/11/private-microwave-networks-financial-hft/ https://arstechnica.com/information-technology/2016/11/priva... [1] https://www.reuters.com/article/us-highfrequency-microwave/lasers-microwave-deployed-in-high-speed-trading-arms-race-idUSBRE9400L920130501 https://www.reuters.com/article/us-highfrequency-microwave/l...