According to @KobeissiLetter, US technology CapEx in 2025 as a share of GDP nearly matched the combined scale of the largest 20th-century capital projects, with Big Tech CapEx around 1.9% of GDP last year (source: @KobeissiLetter). By comparison, nationwide broadband buildout at the start of the 2000s was about 1.2% of GDP, the 1949 electricity expansion, Apollo program, and 1960s Interstate Highway system each were about 0.6% of GDP, and the Manhattan Project totaled about 0.4% of GDP (source: @KobeissiLetter). The source characterizes this as an unprecedented AI investment rush, providing traders a concrete benchmark for sizing AI infrastructure spending against historical megaprojects across equities and digital-asset narratives (source: @KobeissiLetter).