If your problems are large and a lot of buildings have difficulties with not enough customers, you should focus on city planning. There are several ways how to solve problems with not enough customers. How to solve the problem with not enough customers in Cities Skylines? However, if there are districts full of buildings with this icon, your problem will be much bigger. This particular icon can be just on some units of buildings and your problem will be small. The problem with not enough customers is represented through the green icon as you can see above. How does the problem of lack of customers look like
