"There are two things I am sure of after all these years: there is a growing societal need for high assurance software, and market forces are never going to provide it." - Earl Boebert
Ross Anderson has a good reply to your statement in the 7th chapter of his book, 'Security Engineering'. [1]
Not so. The company processes are responding to a marketplace which allows products to ship with minimal security effort, thereby translating poor security into profit thanks to a more or less uninterested public. Nothing will change until legislation. For many kinds of companies they in fact cannot change until legislation.