The soft drink concentrate business is highly profitable due to low costs of production and barriers to entry. Concentrate producers require only $25-50 million for a plant that can serve the entire US market. They face little threat from new entrants due to patented formulas and brand equity built over decades of marketing. In contrast, bottlers face higher costs, more competition, and lower profits of around 35% due to factors like needing large capital investments for plants. However, Coke and Pepsi have been able to sustain profits through brand loyalty, expanding into new markets like juices, and leveraging their brand equity globally despite slowing carbonated drink demand.