Companies with code in production have a short-term real incentive to keep that code running. This is different from code from research projects, which is on m

Companies with code in production have a short-term real incentive to keep that code running. This is different from code from research projects, which is on many cases just run a few times, and in other times, written by somebody who has, if he / she wants to make any kind of career in the field, to change to a new workplace and will not have any time to maintain that old code. There are a few long-running mayor science projects, say, in particle physics or astronomy, which are forced to work differently. And in these environments, there are actually people who have knowledge on both science and software engineering.