We were number three or four in our market (it depended) and our entire business strategy was to watch the number one player, and do what they did.
So a number of my ideas weren't actually flat out rejected, but they weren't a priority- we already had a list of features to implement. Of course, by the time we implemented those features, the number one had moved on and implemented the stuff I'd originally proposed. Such a frustrating process, and a 100% guarantee that you'll never be the number one company.