I'm a big believer in the tech, but when I look today I still don't see how Visa really plays well with the current crypto market.
There are almost no cryptocurrencies that actually have desirable cash-like qualities that would result in their use in the retail space which basically eliminates all B2C like options. CBDC or other forms of tokenization could be a big deal, but CBDC certainly isn't there yet, and despite some interesting initiatives I haven't yet seen a value add tokenized solution in the retail sector. Including in developing countries, existing solutions using traditional payment networks are still more desirable.
There is the classic Innovators Dilemma where the new hot product will obviously underperform traditional products in the interim but eventually outperform them over the long term. I could see this happening in the developing world, but to my knowledge I have yet to see a product that seems to fit this mold.