Very informative article. I think however that it depends on how big a business you want. Earning an income from writing is possible without dishing out hundreds in expensive lawyers and professionals. Many can't afford these, especially people not working. I have researched a lot about taxes, privacy, etc and got some advice from professionals for free. Here is is quite easy to register as self employed and no tax is paid unless someone earns €5,000 or over. It's really not rocket science, but I agree that earning money is starting a business and a business mindset is required, and starting your own blog isn't an easy undertaking.