A government interested in raising national productivity would underwrite the necessary cables and expedite their installation. However, that's apparently not the UK government since 2008.
1. "Productivity and potential 2003-2012: the UK decade that decayed", 2013: https://www.primeeconomics.org/articles/productivity-and-pot...
2. "UK productivity continues lost decade", 2019: https://www.bbc.com/news/business-47826195
3. "The UK is facing two lost decades on living standards", 2022: https://www.ft.com/content/7968048a-3f7f-4cb0-8fa1-e10aff14b...