Money, any money, even cryptocurrency, simply does not do what you think it does.

If you want stuff then invest in that specific stuff — you should only be investing in or building a financial network when that in particular is what you need, not when you want something else like “electricity” or “food” — and if you’re really going to call out the $10 as a serious number, at that level food is a higher priority than any of the equipment you’d need to take part in even a low-cost digital payments and micro-financing system like M-Pesa (it’s not just banks that do loans!), you certainly shouldn’t be considering paying for random hardware to be installed in a different continent (which is implicit in your scenario)