Why might the aggregate supply be inelastic?

Aggregate supply may be inelastic due to factors such as limited production capacity, fixed resources, and long-term contracts that restrict firms' ability to quickly adjust output in response to price changes. Additionally, when the economy is near full capacity, firms face challenges in scaling up production without incurring higher costs, leading to a steeper supply curve. This inelasticity can be more pronounced in the short run, where firms cannot easily change their labor or capital inputs.