Japan's Energia, the ISP of a regional electric company, has been running a small deployment of G.fast for a year. They like it so much they signed on with Nokia to be a Japanese distributor. Alongside the giants NTT, KDDI, & Softbank there remain many smaller companies delivering broadband.
Energia, the electric company for the Hiroshima region, years ago entered the ISP business. Distributing equipment is a natural move. After Fukushima, diversification must be particularly attractive for electric companies, especially in Hiroshima. They are decommissioning reactor #1 at their Shimane Nuclear Power Station, which will take thirty years. They hope to restart #2, where corrosion was recently discovered.
Now that G.fast is proven to deliver 500-800 megabits, it allows the smaller companies to compete with the fiber to the basement of the giants.