So far, if we see the implementation of blockchain technology is still dominated by crypto currency applications, it is not impossible that in the future blockchain technology will be adopted and applied to all the needs of the industrial sector because blockchain technology can help and simplify its performance.
It can help in a lot of places just that we more or less are not aware of where it is being used. Many financial companies are using the blockchain technology for developing applications and running their systems. Gradually we might see the blockchain developers being a specific niche of software developers - currently the tech industry is seeing this change.
As we can see clearly the government do no oppose the use of this tech but they oppose the use of bitcoin. Meaning it will take the governments more time to decide what to do with the legality of bitcoin and crypto in general but they want developers of blockchain tech to start their work and to pursue this for future.
The most successful and most viewed blockchain application right now is DeFi. His fans have been very much in recent months. Next up are NFT and incubator. You can see examples like dego, alice, sfund.
DeFi is a short form of decentralized finance, a blockchain based finance system. It is not an application but a use case. Yes it uses blockchain to mirror what the traditional finance system has been but calling it an application does not sound correct.