In business, you need something dependable. A system you can count on that will generate the consistent results you seek. These small gains aren't sexy; they're usually quite boring and don't provide a whole lot of excitement over the results they produce. But they're steady and predictable.
Looking for the big gains can bring an enormous amount of windfall and opportunity, and you have to stay vigilant in order to recognize them when they present themselves. You have to be ready for the big gains if you're ever going to make any real strides in your business. But also understand that they're unreliable. You can't build a business on seeking huge gains, you take them as they come.
Bottom line is, you want to be great at winning by the inches, it'll give you the resources you need to build a sustainable business, but go deep when the opportunity is there.