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/priva... [1] https://www.reuters.com/article/us-highfrequency-microwave/l...

I know the main people behind much of the hollow core work being done. Much of their financing is coming from HFT related firms.

I think that if you are a HFT, you probably have a server set up next door.

The suggestion is about trading across multiple exchanges, for example between London and NY. Going via Starlink is potentially quicker than a fiber under the Atlantic.

They will have servers “next door” to the exchanges, but need the servers to have incredible low latency connections to each other.