Those who do tuitions or look after children or run cupcake businesses from their homes with out proper registration (which none of these mentioned can or do have) and neither do they have proper liability insurance nor do their landlords give permission (for liability reasons). You get what you pay for and you pay for what you do illegally.

At the very least, You need a local sponsor, deposit with the government, and a separate building operation. Otherwise, you are operating illegally and will be treated accordingly if someone gets sick or complains