Hacker News Reader

I would says "vendor lock-in or even legacy code". It seems to me that the systems that use mainframes have business continuity and stability as main goal. If it works there is not sense in migration. I think that for systems that use mainframes money is not the issue and on top of that migration costs would be huge.

View on HN

I know that some of them tried to rewrite large systems but failed. You are right that it is not just a money issue since they could spend hundreds of millions of dollars on the rewrite and then basically scrapping it.

It shows that they did want to switch but it was harder than they thought.

Reply on news.ycombinator.com