Re: How had your organization benefited from implementing ISO 9001?
Like everything else in life; diets, medication, education etc., they benefit us in different ways. One client had such robust systems in place that doing 'ISO' was only a very small benefit. Nothing to do with getting or keeping more business because of registration - that's a bit hokey anyway, because it's your performance that matters to a customer in the end.
Other organizations who have a less mature approach to business can benefit to a greater degree.
So it isn't a simple, one size fits all 'equation', only a reflection of how far a business 'goes' in maturing it's approach to doing business, through a systematic approach to process management.