According to the World Economic Forum, by 2027, 10% of world GDP will be reflected in blockchain.
I think that's misleading.
Its meant to imply 10% of world GDP will be reflected in blockchain -- if banks and other large financial institutions switch to blockchain
Do the experts in the World Economic Forum understand what blockchains really are? Maybe if they really did then they wont arrive with those figures. Blockchains are among the most inefficient ways to store information. Im very sure by 2027 someone has invented a better append only form of ledger.
Blockchains are to finance what bittorrent is to downloading files.
A case might be made for bittorrent not being the most efficient method to download files. But in some cases the different format has advantages which might outweigh any disadvantages.