A16Z: AI Capex Ushers In a New 'Age of Atoms' for Markets

The global AI investment surge has triggered a multi-trillion-dollar capital expenditure cycle that is redirecting market leadership toward hardware, infrastructure, and other capital-intensive businesses, according to a report released October 5 by venture capital firm Andreessen Horowitz (A16Z).

The shift ends more than a decade of dominance by software and other capital-light businesses. A16Z said rising spending on AI infrastructure is fueling strong demand for GPUs, high-bandwidth memory, power equipment, skilled workers, and copper. Demand is outpacing available supply in several of these segments.

"We've entered a new cycle of real assets, and while tech is running through all of it, capital-light bits is no longer the (only) name of the game. Another Age of Atoms has arrived," the report stated.

The change is already visible in financial markets. Capital-intensive businesses are gaining ground as the world's largest technology companies direct their profits into hardware and AI infrastructure. A16Z argued that the rise of physical-asset spending marks a structural break from the asset-light equity-market narrative that defined the 2010s.

What sectors are benefiting?

The AI supply chain has emerged as a primary beneficiary of the investment cycle. A16Z identified chipmakers, optical interconnect providers, turbine suppliers, and liquid cooling companies among those capturing spending. Power equipment makers and copper suppliers are also seeing rising orders as buildouts accelerate.

Demand is also spreading beyond pure AI infrastructure. Electric vehicles, solar power, defence, robotics, and efforts to rebuild industrial capacity are contributing to a broader shift toward physical assets, the firm said. A16Z described these moves as part of the same capital rotation, not separate trends.

The scale of required investment is massive. A16Z estimated that approximately $90 trillion in global investment will be required by 2040 to meet infrastructure and industrial needs. The firm framed this as underlying demand pulling capital toward hardware rather than digital-only businesses.

How are hyperscalers paying for it?

Spending by major cloud companies, or hyperscalers, has so far been funded largely through their own profits. The firm said this approach has driven a significant decline in free cash flow — a trend A16Z expects to persist until around 2028. That math leaves hyperscalers with limited headroom if capex keeps accelerating at current rates.

What's next for capex?

A16Z said there are currently few signs of a slowdown in capital spending. The firm argued that AI demand behaves differently from prior technology cycles, which typically cooled as adoption matured and prices fell.

"Capex shows no indication of a slowdown any time soon, and if demand for intelligence is indeed infinite, then this cycle may not be like the other cycles," the report said.

Supply constraints remain a parallel challenge. Components beyond GPUs face unusually long delivery times, and A16Z expects these pressures to keep AI infrastructure and industrial capacity at the center of the investment cycle for the foreseeable future.

A16Z's analysis positions the AI buildout as a multiyear reallocation of capital that will continue to favor industrial and infrastructure operators as long as hyperscaler demand holds and supply remains constrained.