In enterprise software, at least the companies I know, they will underbid and return to the well many times for increases. They will blame this on poorly scoped

In enterprise software, at least the companies I know, they will underbid and return to the well many times for increases. They will blame this on poorly scoped requirements, for which they were not responsible. They will be right, and they count on this for much profit. If you quote virtuously, you will be a victim of your client and competitors who scope/quote less virtiously.