100Gbps over SMF up to at least 40Km - that's a nice prospect.
Indeed. And is a prime example of why fibre is the future.
Powerline technology has always been, and will remain niche residential market technology for the home-owner to play with on the weekend. It's never going to get any traction in the business world, and therefore any interest in ploughing R&D funds into it is unlikely, and whatever limited investment does happen is going to be purely for the low hanging fruit manufacturers.
(all my own personal opinion of course.....)