Re: Silly... @Cynical
One example of one approach ..... from the Alcatel-Lucent web site.
"Part of a complete end-to-end portfolio of Alcatel-Lucent ultra-broadband solutions, the new G.fast residential gateway also provides a more efficient way to power the growing number of distribution point units essential for delivering on the G.fast standard. With an integrated reverse power feed capability that powers the remote G.fast distribution point unit, operators no longer need to connect the distribution points locally to the power grid."
Doubtless some will scream about powering a utility providers network - but it's a choice. Provide power for faster service or choose not to and settle for VDSL2 at best.
Ultimately as FTTH is just too expensive and unlikely to happen, anything that offers the chance to push the bandwidth levels higher is worth consideration.