Blockchains appear to have some advantages. They're better than backend databases at protecting data integrity. Data contained inside SQL tables can be edited on compromised systems. By contrast, its much more difficult to edit or change data contained inside a blockchain. In some industries like legalized marijuana, there can be a need for a ledger and shipping system where data is difficult to edit to prevent theft and provide a reliable data trail.

Blockchains being a "trust-less" system, they might also reduce the number of middle men across supply and distribution networks, in terms of cutting the number of "trust" employees in the overall equation. With banks and banking, there need to be employees to enable the "trust based" system. In eliminating "trust" blockchains could reduce the amount of manpower required to achieve equivalent tasks.
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Yeah Blockchain technology  was developed to answer the need of security , treaceablity or paper trail transactions which is difficult to alter that can protect sensitve information and the versatility of transaction which is fast and economical than the usual or back end technology that we had.In other words what is the short coming of backend technology being answerd by block chain because it was design fullfill the need of the shortcoming of todays technology.