&gt; There&#x27;s a huge number of houses with idle fiber installed 10+ years ago.<p>Do you have a source for that? Verizon may have passed 18 million homes, but only the homes which have placed an order for Fios were ever connected. So, no or very little idle fiber.<p>&gt; Gigabit ethernet was introduced 17 years ago and carries 5 km over fiber.<p>Wrong. You can buy off the shelf SFPs with 200 km reach. Use amps if you want longer reach.<p>&gt; Cable is just waiting for providers to switch on 10 Gbps since years ago.<p>You don&#x27;t <i>just</i> switch on 10 Gbps on cable. First your vendor needs to release DOCSIS 3.1 equipment and you need to test it. Then you need to upgrade your CMTS to DOCSIS 3.1 and swap out any cable modems that don&#x27;t support 3.1 and dedicate spectrum to DOCSIS 3.1 downstream channels.<p>And it&#x27;s not since years ago. DOCSIS 3.1 was released a bit over two years ago. Comcast will start rolling out commercial DOCSIS 3.1 service this year.<p>&gt; Phone line copper has similar story...<p>What?! G.fast can theoretically give you 1 Gbps, but only if you already have fiber to your driveway. There aren&#x27;t even any commercial deployments yet and all vendors don&#x27;t even have products yet.