Some people think that Bitcoin is so good that keeping there business finances or income in Bitcoin is the best idea forgetting that it is very wrong to do that.
As we all know bitcoin is highly volatile in nature and so when you keep your business income or money in Bitcoin it risk you losing some part of your money and also affecting your business because Bitcoin can drop in price at any minute and when that happens the money you kept in Bitcoin will drop in price and since the money is meant for your business the drop of it will affect your business financially and can lead to the fall of your business, money is what they use to run a business when there's no money the business will fall.
So don't keep your business money or income in Bitcoin so has to avoid lost, keep your business money in Fiat currency or a stable coin like USDT.
There is no difference and I think it all depends on the time which they want to use the money they store in Bitcoin. Usually, nowadays Bitcoin price has been so pretty and doing much fine, perhaps even though they leave their business money in Bitcoin it would still gain interest within few moments they had left it over there. Just take a person who left their money into Bitcoin right from last year till date what do you think they person could have gained by now? Of course the person would be on profits without undermining how up and down Bitcoin has experienced.