it definitely seems like identifying problems first and providing a solutions is what most innovative entrepreneurs do.
i think whats less talked about is the less innovative business people who are creating successful businesses being the middle man, buying and selling import exporting, etc.
im wondering where ppl get experience in those fields too. im guessing you can always start by getting employed in entry level positions such as sales, etc in the respective industries. from that point on, thats where you're 'studying' begins