How does OpenSea make money?

I'm curious about how OpenSea, a popular marketplace for non-fungible tokens (NFTs), generates revenue. As a platform that facilitates the buying and selling of digital assets, what are the main mechanisms or strategies that OpenSea employs to monetize its services? Do they charge transaction fees, subscription fees, or perhaps utilize other innovative revenue streams? I'd appreciate it if you could provide a concise yet informative answer to shed light on OpenSea's monetization model.