but isn't the blockchain already decentralized?
Blockchain itself is as a permanent database that gets copied to Bitcoin network nodes, so every node should have the same copy of it. In this sense, it is as centralized as it could ever get. A decentralized blockchain would mean that this original copy gets divided into a few (or many) relatively small blockchains that are independent of each other, which means that they might contain different but still valid transactions, and, at the same time, they are still part of a larger blockchain, maybe entirely virtual...
This would essentially solve the scalability issues that Bitcoin might face in the future
Quite confusing , are you suggesting fork to speed up the transactions by not storing transaction data in all the nodes of bitcoin? Are you saying it will be waste of resources (probably storage space) if current blockchain keep increasing?
Replicating millions and billions of transactions would be a waste of network resources
Both storage space and internet bandwidth has been lot cheaper these days so this will not add much cost to run bitcoin node/wallet as well as i don't think this can increase the block size or make transaction faster
There are only around 250k transactions processed daily. If this number increases, say, 100 times, internet bandwidth will be pretty quickly suffocated and storage space consumed as well
