Hidekazu Yokoyama has spent three decades building a thriving logistics business on Japan’s snowy northern island of Hokkaido, an area that provides much of the country’s milk.Last year, he decided to give it all away.It was a radical solution for a problem that has become increasingly common in Japan, the world’s grayest society. As the country’s birthrate has plummeted and its population has grown older, the average age of business owners has risen to around 62. Nearly 60 percent of the country’s businesses report that they have no plan for what comes next.While Mr. Yokoyama, 73, felt too old to carry on much longer, quitting wasn’t an option: Too many farmers had come to depend on his company. “I definitely couldn’t abandon the business,” he said. But his children weren’t inte …
