The imbalance of resources and desires is the same thing as scarcity; this is the fundamental economic problem. It applies to producers as much as to consumers.
All producers need to use resources to make their products. Ideally, they would like to make unlimited numbers of goods so that they could make more money. But this will not always be possible because the resources that they make their products with are limited. To take one example, oil is something that almost all producers need. However, there is only a limited amount of oil available at any one time. Consumers and producers all compete for that oil, driving prices up.
Producers always want more resources than they can have. This is the fundamental problem of economics.