This system situation comes across like what I’m sure many folks here deal with at their own corporations. Older companies with old IT implementation and mgmt that don’t want to modernize because it’s expensive. How do you get around that? You make a business case. How do you make a business case around something that provides no tangible cost/benefit when the primary benefit is to modernize and potentially avoid failure? You can try to estimate the cost of failure but I know from my own mega corp that is often a losing proposal. Especially when you can counter that proposal with ‘are you telling me the new system can’t fail?’.

Hopefully now they get to see the true cost of failure with the current implementation and don’t come up with a list of excuses on why change would be worse than current state.