Anything in the "lifestyle business" category by definition doesn't scale past a certain point. Also, anything that requires a licensed individual (e.g. plumber

Anything in the "lifestyle business" category by definition doesn't scale past a certain point. Also, anything that requires a licensed individual (e.g. plumber, electrician). There could be an interesting business opportunity in Uber-izing networks of these small businesses. For example, I need a dog sitter last minute but I don't want to scour craigslist or have to remember which of my neighbors dog sits.