Structural engineers have to deal with these sorts of issues. They do not build a bridge and say "this bridge is safe." They build it and say "this bridge will function within X, Y, and Z parameters for A number of years if maintained in this way" and similar things. They're dealing with a system which is known to not be totally invulnerable. They do it through comprehensive testing, scientific methods, and, above all, through trusting those technical concerns to the total exclusion of business goals. If it is 90% cheaper to use a weaker concrete, they do not substitute it in and cross their fingers. And if the CEO goes behind their back and does the substitution, or he refuses to provide them with the expensive physical simulation software necessary to do their job, or he ignores safety concerns raised by his engineers, that CEO goes to prison and the company is usually destroyed. This is starkly different from technology companies where suggesting such practices is basically asking them to completely restructure their entire organization fundamentally.
