Some may consider user experience a trendy term, soon to join the oft-mocked verbiage of the tech implosion. For me, it's here to stay. Under whatever name, more and more businesses are competing by learning about and designing for their customers' needs.
Explaining usability to business folks can be troublesome, because how a product can be effectively, efficiently, and satisfactorily used resists easy quantification. Usability depends on the user first: knowing them through customer research, designing for them, and testing the product with real users.
When you expand usability techniques beyond the product, to touchpoints such as advertising, fulfillment, and customer care, you're in the user experience zone. Bringing a user focus to the traditional business areas of customer service, marketing, and sales can optimize all your business practices.
So, what's the opposite of user experience? Companies that make decisions not based on customer needs, but to serve their own internal processes. Designs based on what the design team prefers personally, or what the CEO mandates on a whim. Poorly trained customer service. A marketing team that doesn't know its customers, and a sales force that speaks the wrong language to prospects.
Good companies will all get user experience, because it makes so much business sense.