From a merchant's perspective, Blockchain backed money can reduce the cost of moving money. Typical credit card and ach debits/credits take 3 to 5 business days

From a merchant's perspective, Blockchain backed money can reduce the cost of moving money. Typical credit card and ach debits/credits take 3 to 5 business days to settle and cost the merchant over 2% to 3% of every sale (higher for smaller businesses). That means we consumers pay Visa and the other big processors 2% to 3% of nearly everything we by online and in store because merchants - of course - pass those fees onto us. If this CBDC can process payments within a few seconds or minutes (some Blockchains are able to) that's also a huge win for merchants as that means they actually have the funds they need to fulfill orders rather than relying on credit (which also costs $) and having to wait days for all customer's funds to be deposited. Rapid settling times help cut down on fraud - which itself is very costly to businesses (the cost of which is carried by the consumer). So by switching to a quickly settling CBDC, businesses can save time and money - savings that can be passed to consumers. Now, whether they ever do that is another question.