There are multiple ways of doing that, but the risk now doubles, because both businesses will suck the generated BTC leaving me with almost little or no BTC. I've tried it myself, as it's the only way out, which I can think about. Hence, I'd need to get pass 3 stages, first would be setting up the fiat business with BTC. Second, working until the fiat focused business never needs btc to run smoothly. Third, the fiat business gets enough money to invest back into the bitcoin business. All these stages can be achieved with few extra hands, then extra years. I could remember building a fiat business in the social media niche, which was growing. But, due to the too much complaints of customers about the rendered services not being good enough. I had to kill the business. And since then I've never built any fiat business with the kind of potential that the above mentioned business had. So, it leaves me with no doubts about the possibility of doing same thing again. Maybe in a different angle. At least as the producer of the product. One thing that made me stop building the fiat business in the past, is that I wasn't the producer, It was a reselling business. I had no power to change or make efforts to provide the quality my customers complained about or wanted. It left me with no option than to quit it.