a16z co-founder Marc Andreessen believes that while today's AI boom does show clear signs of the same kind of overbuilding that preceded the 2000 internet bubble, the risk of a massive AI market crash remains relatively low. The key difference, he notes, is the nature of the investors: today's biggest backers are cash-rich giants like Microsoft, Amazon, and Google. Unlike the highly leveraged, fragile players of the late '90s, these companies have deep balance sheets and can sustain heavy capital expenditure even through periods of irrational exuberance.