Real estate agents switch brokerages for various reasons, including commission splits, training, support, technology, and brand strength. Three main brokerage models exist: Dependent (offers strong branding, training, and support but takes high commission splits), Independent (agents keep most commissions but handle all expenses and marketing), and Interdependent (blends training, branding, and profit sharing with moderate fees). Agents should assess their needs and strengths before changing brokerages.