Geographic and demographic segmentation group customers by location or basic attributes like age, gender, or income. A key limitation is the assumption that spending patterns within those groups are similar. In reality, people in the same area or with similar demographic traits can have very different budgets, preferences, and purchasing motivations. That mismatch means you can’t reliably predict buying behavior from geography or demographics alone. Lifestyle segmentation addresses this by looking at how people live—their values, interests, activities, and opinions—which often explains why individuals within the same geographic or demographic group behave differently in the market. So the main point is that assuming similar spending within geographic or demographic groups is too simplistic, which leads brands to focus on lifestyle factors for more accurate targeting. The other ideas aren’t the core reason: data collection costs, applicability to online markets, or overlooking product quality aren’t the defining limitation of these broad bases.