Technology-driven wealth creation lifts Forbes 400 entry 38x since 1982

The microprocessor and internet have driven the greatest wealth creation in history, lifting the Forbes 400 entry threshold from $100 million in 1982 to $3.8 billion in 2025.

The Forbes 400 entry threshold has climbed 38-fold from $100 million in 1982 to $3.8 billion in 2025, as the microprocessor and internet collapsed data costs. Elon Musk topped the list at $428 billion as of Sept. 1, according to Forbes data cited in the Wall Street Journal.

"Whenever a new technology greatly reduces the cost of a major input into the economy, the cost of goods and services drops and an influx of new fortunes quickly follows," wrote John Steele Gordon, author of "An Empire of Wealth: The Epic History of American Economic Power," in a Wall Street Journal opinion essay published Aug. 3.

The pattern repeats across two centuries of American innovation. James Watt's rotary steam engine, patented in 1781, made energy cheap and scaled factories beyond water-wheel limits. The Bessemer steel process of 1856 turned steel from a semiprecious material into a commodity, enabling skyscrapers and safer railroad rails. The microprocessor, introduced by Texas Instruments and Intel in 1971, collapsed the cost of data storage and retrieval — the most consequential technology since the steam engine, Gordon argues.

The stakes extend beyond individual fortunes. Billionaires invest their wealth in new enterprises, creating capital formation that funds the next wave of innovation. Taxing wealth heavily would reduce available capital for economic growth, Gordon argues, warning that ideology risks blinding policymakers to this reality.

From Steam to Silicon: How Technology Created Fortunes

Before the Industrial Revolution, fortunes were built on land and trade, with energy limited to muscle power, windmills and water wheels. The steam engine changed that calculus. James Watt's rotary steam engine, patented in 1781, could turn a shaft and power a factory at almost any scale — unlike water wheels, which were constrained by geography. By 1826, Benjamin Disraeli had popularized the word "millionaire" in his novel "Vivian Grey" to describe the new industrial barons.

Railroad fortunes followed as steam-powered locomotives slashed overland shipping costs. Whereas every town once had its own cobbler, a shoe factory in Worcester, Mass., could suddenly make better and cheaper shoes for the whole country. Within a few decades, railroad fortunes like those of Cornelius Vanderbilt, Jay Gould, E. H. Harriman and James J. Hill were among the largest in the country.

The sewing machine cut shirt production from 16 hours to two, and Isaac Singer died very wealthy. Kerosene from the first oil well in 1859 replaced expensive whale oil as an illuminant, creating the Rockefeller and Flagler fortunes. By 1900, economies of scale had driven kerosene prices down continuously. The Bessemer steel process of 1856 turned steel from a semiprecious material into a commodity, enabling skyscrapers and safer railroad rails — Carnegie, Frick, Phipps and Schwab became household names.

The Microprocessor Era

The ENIAC, the first programmable computer, came online in 1946 — the size of a school bus with more than 17,000 vacuum tubes consuming 150 kilowatts of electricity. Computing remained confined to governments and big businesses until the microprocessor arrived in 1971. Steve Jobs and Steve Wozniak founded Apple and built the first mass-market personal computer; Microsoft provided software to IBM, and Bill Gates became the world's wealthiest man. School kids today carry more computing power in their backpacks than the Pentagon could afford in the 1950s.

Sam Walton used cheap computing for close inventory control at Walmart, which now employs 1.6 million people in the U.S. Jeff Bezos applied the same technology to retail, building Amazon into a company with 1.1 million American employees and about 255 million U.S. customers — roughly 75 percent of the population.

Elon Musk's SpaceX has reduced the cost of space access through reusable rockets, and artificial intelligence is now altering the digital universe with promises of ever-greater computing power. Each innovation cycle has produced new fortunes while making goods and services cheaper for everyone.

This article is for informational purposes only and does not constitute investment advice.