GP was talking about Argentina and the UK. Both have pretty functioning governments, and pretty stable relation. This could easily be solved for most people today. Even China and India have stable governments that pass legislation and adopt international standards. You will only find exceptions in places like the USA, Iran and Russia. However most people don’t live there.
I'm quite tired for a proper response right now but I wanted to point out that this has nothing to do with UK-Argentina bilateral relations: Argentina's economy has a very complex history, specially during the past 20 years, and things that you give for granted like transferring money internationally with your bank or having a savings account are simply not an option.
Again, many countries around the globe don't have a functional government capable of produce such legislation _tomorrow_.