The Internet – that 200 million-person, $8 trillion global economy – accounted for 21 percent of GDP growth in the world’s largest economies over the last 5 years, McKinsey found in a report released this week. As an entity, it accounts for more GDP than the Spanish or Canadian economies, and it’s growing faster than Brazil. As a sector, it is now larger than these countries’ agriculture or energy industries. Sweeping statements about the size and growth of the Internet are tough to swallow.