In short, I have adopted a formula for myself that your thinking as a bettor will develop when you study different sports and compare them with each other. Do you think this development really happens? If so, how does it manifest itself?
if I am going to bet on one sport, I see no reason why I should study different other sports. For example in my country I could say that our national sports is football. If I am going to become serious at betting on football to have a chance of winning then I should be able to study the game and the different leagues and the different clubs. This would help to develop the understanding and knowledge to bet on just that sport with some confidence. Studying other sports will be too distracting to make any progress.
Yes off course having an focused towards what games you bet on can increase your capability to win since, because of the consistent you develop other skills and knowledge that can easily aid your winnings.
Sport for example is one sport games that many have developed strong attachments to, and for that most sport bettors will always go for football betting since that is the way their could easily analyze and predict accurately the game.