The irony is that I would have thought the opposite especially with the emergence of the young tech companies... but the trend is even more troubling as there hasn't even been a shift in increasing entrepreneurship amongst older Americans - this despite the fact that technology makes it easier than ever to start a business (WSJ):
The decline in young entrepreneurs is part of a broader drop in private business ownership over the past 25 years. Between 2000 and 2012, new business formation slowed even in such high-growth sectors as technology, according to economists John Haltiwanger and Ryan Decker of the University of Maryland and Javier Miranda of the Census Bureau.
Slowing U.S. population growth since the early 1980s has reduced the supply of potential entrepreneurs of all ages, and lessened demand for new goods and services, said Mr. Litan of the Brookings Institution. Meanwhile, business consolidation has led to more formidable competition for startups, making it harder for new entrants to gain a spot in the market, he said.
Overall, the U.S. “startup rate”—new firms as a portion of all firms—fell by nearly half between 1978 and 2011, according to an analysis by Mr. Litan and his research partner, economist Ian Hathaway.