That's a good point in general, though the product example I gave was primarily funded by government contracts and (at least based on the negotiations) the contracts were far more sensitive to price than quality.

But I will say that my experience in enterprise software has been similar. The relationship between software quality and company success is more a bell curve than a linear one: if you neglect quality you'll certainly lose customers, but above a certain point if you spend too much of your budget fixing every bug you'll eventually lose to competitors with mediocre quality but lower prices and/or more capabilities.

It's all about finding the right balance.