A panel of corporate ownership data, stretching back to 1902, shows that the Canadian corporate sector began the century with a predominance of large pyramidal corporate groups controlled by wealthy families or individuals. By mid-century, widely held firms predominated. But, from the 1970s on,...

Family-controlled pyramidal business groups were important in Canada early in the 20th century, amid rapid catch-up industrialization, but largely gave way to widely held free-standing firms by mid- century. In the 1970s and early 1980s – an era of high inflation, financial reversal,...