People saying they can quit their real life, into the world job and only work from home in front of the computer should get a reality check. Sure telecommuting is possible for some jobs but budget cuts to companies have left those employees out of work lately as thy were seen to others they use to work with as the "shadow workers".
I would say bitcoin is more like a side job that you can make a fair bit with if you are good at your craft. but can not 100% rely on it to make a steady stream of income in order to survive. Just my opinion in view of the stage we are at now.
Yeah getting a steady stream of income is easy, but maintaining it requires a different skillset, good investing, innovating etc.
You also need some kind of security and in my perception, surviving with a bitcoin company is close to impossible.
At present, to be a pure bitcoin company and survive is very difficult. The bitcoin industry is too small. If it is in 10 years, a bitcoin service company might survive. So if you establish a company now, you need to burn a lot of cash to become an established company.