How does Arweave make money?

How does Arweave, the decentralized and permanent storage network, generate revenue? I'm curious to understand their business model and how they sustain their operations without relying on traditional methods like advertising or subscription fees. Given their unique approach to data storage, I'm particularly interested in how they monetize their services and what incentives they offer to users and miners. Can you elaborate on their revenue streams and how they manage to maintain the security and integrity of their network?