How to get fixed cost?

Could you elaborate on the concept of fixed costs and how one might go about obtaining them in a business or financial context? Are there specific strategies or methodologies that one should consider when aiming to establish and maintain fixed costs? Are there any potential challenges or drawbacks to relying heavily on fixed costs, and how can these be mitigated? I'm particularly interested in hearing about real-world examples or case studies where businesses have successfully implemented fixed costs into their financial plans and the positive impacts it had on their operations.