Have you ever worked so long on a project at work that you know will fail but it just keeps going cause the management can't bring themselves to kill it cause o

Have you ever worked so long on a project at work that you know will fail but it just keeps going cause the management can't bring themselves to kill it cause of everything they have invested into it already? Happens to investors and money too sometimes. I don't think it will here, but I'm just a peon.