As you grow as a company (especially if you grow quickly or through acquisitions), the more integration points between parts of the company to have. You eventu

As you grow as a company (especially if you grow quickly or through acquisitions), the more integration points between parts of the company to have. You eventually reach a point where you are spending more time on integration parts of the company than innovating to keep ahead of competitors. At this point you are dead in the water while your competitors start to catch up. Yahoo hit exactly this point. If Google is not careful they will also hit this point.