Working as a business analyst and product manager I'm often given the opportunity to provide feedback on technology design. One of the best descriptions of user experience design was written by Peter Morville (http://semanticstudios.com/publications/semantics/000029.php) on his blog 'Semantic Studios'. His belief is that businesses need to look at context, content, and users when formulating new products. It is the intersection of this venn diagram (the sweet spot if you will) where a product can achieve breakthrough innovation.
Context - the business goals must be considered when designing new products. Similarly, if a product is brought to market but the supporting technologies aren't available, it will never be a true success. Consider Oracle's move towards the cloud in the early 90s couldn't take off largely because the wireless ecosystem wasn't strong enough. That didn't mean that it wasn't a great idea, just that the world wasn't ready for it.
Content -a product has to be useful for it to be successful. We have to have the courage to creatively find new uses for existing goods or provide value to consumers. If our product doesn't contribue to easing some burden, reducing costs, or improving satisfaction it won't survive on the shelves.
Users - user needs and behavior must be put first if we hope to have sustainability. Products have to be easy to find, simple to use, and desirable at all times. Developing a powerful image, identity, and brand requires users to connect with your products and tell others about them.
Find your sweet spot of context, content, and users and advance the conversation beyond availability to true success.