Perhaps we just have to advise people like we would an investment; only convert what you can afford to lose and keep it diversified as you should with cash.
Yes, but it's not the point. It is very hard to build a business independent of external currencies, as must pay suppliers, pay for rental of equipment and office, etc. Either way will be the bills that you have to pay in USD or other goverment money. Therefore, exchange rate stability is important. Otherwise, businessmen have to include in the final price a large fee for the risks.