I don't think I've ever seen a system fall over and be replaced. Systems don't fail and get replaced - companies do. Systems at profitable companies keep on chu

I don't think I've ever seen a system fall over and be replaced. Systems don't fail and get replaced - companies do. Systems at profitable companies keep on chugging along. Occasionally someone suggests a major rewrite but that usually fails when it doesn't reach feature parity, nevermind meet the expectations of all the new features which were thrown at it to justify the expenditure.