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Are they? I've had no issues with remittances outside of blockchain. In places where I have heard remittances are difficult, it is usually due to regulation, something this does not solve either.

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My Spanish teacher in Peru has to travel one hour by bus to reach the destination for Western Union money transfer. With crypto using local crypto exchange, he receives the money directly into his bank account.

Its difficult because it requires parked money (nostro accounts) in foreign currencies. This imposes a risk and act as "dead capital". At some point the cost to maintain the corridor is higher than the profit so the corridor is closed. Transaction then are routed trough other corridors which means multiple currencies swaps. More loses and more parties who want their cut. + it can takes days and the system are one-way so you have to ask the recipient if he got it to know.

Public ledgers can make a difference See https://ripple.com/ripplenet/on-demand-liquidity/

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