Even the real life the prices of good and services follow the prices of the exchange rate and the transportation so if the price of Bitcoin is volatile then the goods and services will also follow suit.
Currency values will depend on that country's economy and just because your country's currency fluctuates wildly doesn't mean other currencies will too. Not to mention, even if they are volatile, they are not more volatile than bitcoin, can your national currency lose 5-10% in 1 day? But with bitcoin it is very normal and regular.
Bitcoin's volatility is huge and it would be a big risk if we don't plan well when using it as a company budget. Don't deny it because this is a real problem and that's why OP created this thread.
Do you own a business and have you ever used bitcoins as a payment method for your business as well as used them as a company budget? How can you be sure that there will be no problems using bitcoin as a means of payment?