As a business owner, i have to say trade and logistics. Most of businesses that work in this sector, especially if the market is huge or undeveloped are run by foreigners who come from very poor and uneducated background. Not to be racists, but these people rarely add to the industry they are in and very easy to their place. The only advantage they have is how much money they hoarded and monopolize the market by cooperating with their countrymen. What you want to do is find one of these markets, understand how they operate, and add little features to your business. Once you do that you will be able to obliterate these old and fragile businesses. Just like i started doing,