> A better solution is repurposing unused 75Ω coaxial cable with MoCA 2.5 adapters
I'll second this. MoCA works. You can get MoCA adapters off Ebay or whatnot for cheap: look for Frontier branded FCA252. ~90 MBps with a 1000BASE-T switch in the loop. I see ~3 ms of added latency. I've made point-to-point links exclusively, as opposed to using splitters and putting >2 MoCA adapters on shared medium, but that is supported as well.
I'll second this. MoCA works. You can get MoCA adapters off Ebay or whatnot for cheap: look for Frontier branded FCA252. ~90 MBps with a 1000BASE-T switch in the loop. I see ~3 ms of added latency. I've made point-to-point links exclusively, as opposed to using splitters and putting >2 MoCA adapters on shared medium, but that is supported as well.