The document describes the business model evolution of Charles Schwab from a conventional brokerage to a discount brokerage to serving financial planners and launching the OneSource platform. It discusses how Schwab identified gaps in existing models and designed new services like the discount brokerage and institutional services for financial planners to better serve customers with lower costs and greater convenience. The document also summarizes Schwab's Talk to Chuck advertising campaign aimed at positioning the company as a cost-effective alternative through an approachable spokesperson.