SWIFT - Blockchain
The otherness between the solutions in the framework of GPI - Global Payments Innovation, developed by SWIFT and fintech start-ups that demonstrate PoC (proof of concept), is the experimental projects of banks that are testing new approaches of SWIFT, based on already operating systems...
https://bit.news/eng/swift-rejects-blockchain/ 
If the solutions that SWIFT is looking at are based on already operating systems, they are just incremental changes.
In any case, Bitcoin is a rival to SWIFT and the money transfer business of global banks. So SWIFT rejecting blockchain is not a surprise.
