There is a grate number of examples who entrepreneurs who gave up studying to implement their dream. Just to name two of them: Bill Gates and Mark Zuckerberg (Facebook).
When I studied in Bilbao, there was somebody I know who left his studies to create a company. At that time, we all laughed (maybe especially me!)
He created several companies on the Internet sector (hosting, domains). He may not have been as successful as Mark Zuckerberg but he is much more successful than many of those who laughed at that time:
Once this entrepreneur and one of those who laughed (not me) met by chance in a seminar about entrepreneurship in the Euskalduna Conference Center in Bilbao: one of them was attending the seminar and the other one was working as a waiter for a few dollars an hour. Who is who?