The sad reality is that the "business" guys are often clueless because they don't understand the ecosystem in which their technology functions - note that I'm not saying they're clueless because they don't understand the technology - rather that they're clueless because they don't understand technical sales, or the cost and benefit of development decisions - and if they view technologists as "a bunch of nerds who know nothing about business" - they're in trouble. Technologists don't need to know much about business to be able to provide valuable information that should sculpt your decision-making.

A good business guy realises that the right technical backing and understanding is essential in today's world - if you don't understand the technology, or the impact that your business decisions have on your development - i.e. the costs they incur vs. the marginal benefit - and you're not prepared to talk to your technology team because you view them as valueless... you are unequivocally screwed, because you'll end up coded into a corner with your development staff walking out on you, your customers let down, and you on the hook.