We have built an open source tool that you can connect to any node (on an Ethereum-based blockchain) and instantly start building datasets about contracts that you care about. All you need is their ABI.
https://github.com/bugout-dev/moonworm
We are committed to keeping this code free. Our policy is only to charge for our operational expertise, but all the code that we use is open source. We are in the process of opening our platform up for decentralization (so anyone can contribute node time, storage, etc.).
Intellectual property is theft.
(Wouldn't be surprised if they're slurping from middlemen services themselves)