You're too young to remember how at the height of the late 90s "dot com" tech bubble, people were not only dropping out of college to join and start companies, some were even dropping out of high school. Then the tide went out and we coined a new term for the masses of the unemployed and non-degreed: "dot bombers." The conventional wisdom at that point was, "they should have taken the long view." Now we can add your question as a new data point in comparing the current situation to the 90s bubble.

Ideas are cheap, and the future is long. Your idea will still exist in a year or two and there's plenty that can be done part-time until then. You may decide in the future to change careers, to have a kid, to go to grad school. Having a college degree will be an important foundation for wherever you decide to go. It will be much harder to come back and finish later.

Gates and Zuckerberg dropped out because success had already arrived. Just as a smart investor waits for a proof of concept before investing serious money, you should do the same with your personal capital.

One more note: College may be the last time you'll be able to pursue off-the-beaten path interests and understand more about yourself. Take an extra course in calligraphy, or advanced operating system design, or mythology, or history-- whatever passions or passing interests you have never had a chance to nurture. In addition to shoring up your tech background, you'll become a more well-rounded person, which (besides the intrinsic benefits) is something companies like to see when they hire. Give serendipity a chance to happen in the great mixing bowl and incubator that college is.

Good luck!