Their best selling plane in history is also that which carries the most blatant stain of corruption and negligence. If Boeing gets away with this type of behavior, we really do essentially break the system by acknowledging that as long as you get big enough, it's totally fine to cheat; even in a life/safety critical industrial vertical. Sure, the PR will suck, but the network effects will ensure you keep rolling unharmed because you're too big to be allowed to fail.
This is way more than any one person's convenience at stake. This is any hint of actual systemic integrity that is at jeopardy.
This is the danger of excessive centralization and consolidation. Yes, synergy happens, and money gets unlocked, but the consequences of failure also get amplified, becoming of such a scale the entire infrastructure starts getting jeopardized. More seperate, redundant pieces at least ensures there is buffer to keep some semblance of stability in case of catastrophic failure of one particular agent in the system. When the system is essentially one agent, you're flying on a prayer nothing goes wrong. When you only have two realistic options, it isn't much better.