https://www.cnbc.com/2025/11/23/how-device-hoarding-by-americans-is-costing-economy.html
https://www.federalreserve.gov/econres/notes/feds-notes/investment-as-a-source-of-productivity-growth-20251015.html ... https://www.youtube.com/watch?v=vi_vchW8i6Q