The thought is good, but let's see the practicality of it. Bitcoin's market is so volatile that any time the value may drop which can cause a loss of revenue to a business, that's just one factor. Let's go to the legality, A Legitimate business needs to file Taxes and submit audit reports. How would one business will be closed its book when there are unallocated revenues? Namely Bitcoin per se (I'm talking about it based on our country's laws), so yeah given the scenario in which, Bitcoin is not recognized yet as a currency or can be made as mode of payment, this will literally be floating on the balance sheet. Not unless, one will be able to hide, but once caught probably Business will close down and eventually all parties involved will held liable.