Just saw an article for a big push for fiber.
https://seekingalpha.com/article/4083610-iot-cloud-computing-open-opportunities-fiber-optic-market
This will also help miners. Fiber goes further with less electricity and less heat. Sfp, switches and media adapters have come down drastically in price. Another great help is that all the inductive current that can cause issues with Ethernet won't affect your fiber lines.