We like to think that success always breeds more success, but often it breeds failure. When we hit on a model that works, we hone and optimize it leverage market conditions. When those market conditions change, we find ourselves vulnerable.
The only way out of this trap is to always explore and experiment. Every business model fails eventually. Those that survive in the long term are always looking to build new ones to replace it.
To learn more, check out my blog post, Why Success Often Breeds Failure