Facebook and Libra are focusing on Financial area. Is there any other area that blockchain can be used?? It's hard for me to imagine anything else.
Don't compare Blockchain and cryptocurrencies, these are absolutely different areas! While blockchain is a technology, bitcoin is just one of its use cases.
However, please read the below link to learn more about possible use cases of blockchain,
https://blog.advids.co/20-blockchain-use-case-examples-in-various-industries/Hope this helps!