How solopreneurs will use AI to rival mid-sized companies

Through the end of the 2010s, people were a company’s infrastructure. Large workforces provided the scaffold upon which a business could build capacity for complexity: hire more people, take on more work.

Artificial intelligence has upended this relationship, decoupling a company’s potential productivity from its headcount and redefining which businesses will fare best.

As a result, America’s mid-sized companies are disappearing: the number of businesses with between 250 and...