This is a very common story. The people who push for that do it for two reasons (1) they don't feel competent enough to use a popular solution that would fit be

This is a very common story. The people who push for that do it for two reasons (1) they don't feel competent enough to use a popular solution that would fit better and ensure a more stable future for the project, and/or (2) they realise it might help them to hold their position longer if they author their own solution. It's important the management realises that.