For many economic problems there is little to no data available and some economic problems, for example for real cooperations, data collection/acquisition is very complicated or sometimes impossible. Besides, new theoretical approaches cannot be implemented into organizations without prior testing and validation without risking economic damages to the organization.
Through controlled experiments it is possible though, to test new theories in small setups first and therefore to be able to better isolate and control those factors that influence the outcomes. Experimental findings also often contribute to the development of pre-existing theories.
Conducting economic experiments therefore is an important and established research method, which was appreciated, among other things, through Daniel Kahnemann and Vernon Smith winning the Nobel prize in Economics for their work in the field of experimental economic research in 2002.