It is true that are probably many niche markets that pay respectable income to people who are willing to invest 10-20 hours per week. It's just like how many pe

It is true that are probably many niche markets that pay respectable income to people who are willing to invest 10-20 hours per week. It's just like how many people become successful at their weekend hobbies and sports. But many things these days resemble a game of winner takes all(social products, App Store leaderboard, etc...) If you are striving for a top spot in one of these areas, chances are you are facing competitors who are working both "hard" AND "smart". The claim that you can work 10-20 hours a week and stay competitive in these situations just seems overly optimistic to me.