Quite frequently in enterprise software I've built something that has either been replaced soon after or a 3rd party has been brought in with a product or our p

Quite frequently in enterprise software I've built something that has either been replaced soon after or a 3rd party has been brought in with a product or our product has been discontinued. Usually this is nothing to do with the technical side of the project and is down to finances/support arrangements/strategy. I still got the same experience building it whether it was successful or not and I still got paid so not too bad. Conversely some things I've built/worked on have still been in use 20 years later...