Minio gives you "only" S3 object storage. I've setup a 3-node Minio cluster for object storage on Hetzner, each server having 4x10TB, for ~50€/month each. This means 80TB usable data for ~150€/month. It can be worth it if you are trying to avoid egress fees, but if I were building a data lake or anything where the data was used mostly for internal services, I'd just stick with S3.