Final answer:
The main challenge to the formation of consortia is the belief that they might create monopolies, which is why they are created in domains where the government can control their monopolistic activities.
Step-by-step explanation:
The subject of this question is Business. The question is discussing the main challenge to the formation of consortia, which is the belief that they might create monopolies. Consortia are created in domains where the government can control their monopolistic activities.