Cryptocurrency payment getaways have the lowest transaction fees so that the business owners gets more profit from it.
Actually, receiving payments from digital wallets and typical payment processors that they've been using don't even require a fee. But on their end, when the time of audit has come, AFAIK there goes the fee that they're obliged to fill based on the agreement from those payment processors that they use.
accepting cryptocurrency as a method of payment opens you to more customers internationally. it will helped your business to increase profitability and revenue growth.
It's giving customers more choice for payments that they should use. At the same time, it's giving the good vibes for the customers that there is this business that do accept bitcoin and is helping the crypto economy through their acceptance of it so, in return, they'll support it and would like to pay their invoices through bitcoin or any other accepted crypto.