We learn in learn in high school physics that it is easier to maintain momentum than it is to re-capture it once lost.
In life, the longer you follow a new routine (e.g. dietary, waking up early, exercising more, etc.) the better chance it has at sticking (40 days is a magic number).
Likewise, in business, besting a competitor requires not just delivering a competitive product with solid features, but doing so consistently and over long enough time to re-gain momentum in your favor. Markets and customers don’t shift on a dime.