Blocklists are not only community-maintained resources, but often charge for monitoring and removal services.
There is an imbalance between small and large operators, and the fact that many people suggested us to just use service from $$company$$ instead of self-hosting emails indicates the terrible situation.
We have written about our position in detail previously: https://blog.codeberg.org/how-blocklists-prevent-the-internet-to-be-decentralized-and-safe.html