My Dad has one - as did I, my brother, my son, and now my brother's daughter. IBM fixed mine and my brother's and I fixed my son's. I'm sure the company my brother works for will fix my nieces
It's not a problem as far as bite goes so if that's all that's wrong, no biggie. My Dad turns 71 next month and has all his teeth.
One of my best friends is a flight attendant for American Airlines and she has a gap. She's always had it. Braces were never and have never been recommended and it's part of "her". She grew up in a wealthy family and her husband's a stock broker, so money's not the problem.
Lauren Hutton had a very successful modeling career with her front tooth gap