If your asking what business you should start online, which deals in intangible products... I think a great choice is the one that matches your skills and desires the closest. We (the forum) really can`t tell you what business to start. We are not in your head. We have not had an in depth question and answer session that would provide the proper foundation to provide the best and most clear answer. Not only that, but the decision would still come down to your own.
I suggest you ask yourself... "what do I love to do?" Does it enrich other people`s lives? Can that activity be provided online? Or ask what do you wish others could do for you? Maybe you could do that, and then everyone would come to you. You would then be the leader.
Have a wonderful day.
Vincent Wilcox (a.k.a. KRAKR)
My band: Letters Make Words