I havn't reached that amount but in terms of income... You don't need to build a 10M+ business, just one with a 80k a year income rate, which is fairly achievable.
I only just launched it, i have negligible traffic and we are already getting about 1 customer every week, each customer pays .03 Bitcoin for 3 months ~300 usd perhaps the lifetime value may be 1000 usd if they continue, i'm sure there will be some churn but its fairly achievable that in a few years we will have atleast 80 paying customers.
I'm currently reinvesting the money that comes in into marketing/improving the business and into trading the cryptocurrency markets with the product to validate that its got value for our customers, its not too hard to double your money every few weeks using a high leverage trading platform like bitmex, or something like poloniex if you pick the right coins with our forecasts :)
I built the product in between my day job at Weta Digital.
You can do the same!
Also checkout our referral program where you can earn .003btc every paying user :)
The Sooner you get your business/secondary income stream off the ground the sooner you'll hit your financial freedom goals, with running a business you build trust/authority and traffic over time through many sources and the sooner you start the easier it will be, i started bitbank.nz as just a ghost blog about cryptocurrency trading about a year ago to get something out and eventually snowballed into doing things in a more advanced way, now the company is benefiting from the odd blog post i writ a year ago,
Keep doing things that don't scale and hitting 80k year on year is very reasonable, you don't need to have hockey stick growth or be unicorn level, you should be happy to run a business that would never get funded because your aiming for 80k and not the moon.