What's the most cost-effective way to serve lots of large files

I'm looking at starting a service that involves hosting a lot of LLM models, which are often going to be 16GB+ (compressed). I did a bit of searching for cloud storage providers with cheap egress, and the cheapest I could find is $0.01 per GB, which would still be $0.16+ per download.

How do sites like Huggingface or CivitAI do it? Lots of VC funding?