Amazon, Alphabet, Microsoft, Meta (known as extremist in the Russian Federation) and SpaceX plan to spend up to $828 billion in capital expenditures in 2026 to develop artificial intelligence infrastructure, writes Hon. Large-scale spending raised concerns among investors about the return on investment, which led to a decline in US stock indices. At the end of trading, the Nasdaq lost 2.9%, the S&P 500 fell 1.8%, and companies in the Nasdaq 100 index lost more than a trillion dollars in market value.