RE: FTSE100 at all tyme high31 Jan 2025 11:46
"but unlike traditional utilities that rebuild infrastructure once in a century, telecoms do it in a 5-10 year cycle"
That used to be the case, not any more though. Over the last 30 years telecom transmission networks have evolved through PDH, SDH and now DWDM. Voice and data were previously treated separately within the core, even though they both shared the various transmission networks. The current major Telecom transformations will be the last for decades to come, possibly centuries.
Once you've converged all your voice, video and Data into the same core network, the only changes required going forward is to replace the routers/switches as more advanced models become available.
On the transmission side DWDM is about as good as it gets, when it comes to bandwidth and latency. Fibre development is advancing with new products like hollow core fibre, giving the opportunity to squeeze more bandwidth and lower latency down a fibre, but that'll only be required in a limited number of applications like 5G cell to core connectivity, or very specific uses requiring the lowest possible latency and security.
5G is about as good as it gets when it comes to mobile technology, with 6G more of a bolt on for high usage areas like stadiums and train stations, etc. For longer distance 6G applications, they'll just reuse 5G frequencies.
Once the current transformations are complete, probably around 2030 for the UK, don't expect any significant network transformations within our grandchildren's lifetimes.