Blockchain is great for decentralized applications, not so great for what big companies do.
Big companies are centralized and are subject to regulations, they cannot make easy use of decentralized blockchains.
Blockchains are for people and for small companies to embrace. Don't expect big companies to step in and do much with blockchains.
Indeed. Block chains have a lot of hassle, exactly because they need to be trustless and permissionless and the brilliant idea of Satoshi was a way to solve this almost impossible puzzle: how can we make a common database that can be trusted, if nobody trusts one another and just any wolf can join us in trying to screw up the database ?
Most businesses don't face such problem, so they don't have to live with the cryptographic hassle of a block chain.
And in as much as different business that don't trust one another, need a common data base, they don't need to open it up to just anyone, and they don't need their untrusted partners to be anonymous. So there are then easier ways than block chains to do the thing, although you can always call them block chains if you want to hype it.