I think it is relative. Compared to developing a car, a wordpress website can be completed in a relatively short time; an ERP system on the other hand will tak

I think it is relative. Compared to developing a car, a wordpress website can be completed in a relatively short time; an ERP system on the other hand will take substantially longer. It depends on what is being asked to be delivered when at what cost. Putting that aside, there is a time creep factor because people don't place limits on the demands - ask and the developer can do it. So it is developed and now you need to ensure that the custom piece works reliably and doesn't break and so on. Compared to that, a house needs to be carefully designed upfront and there are limits to what modifications you can reasonably ask for down the line - you don't ask the builders to drag and drop the kitchen to the other side because you don't like how it looks on mobile.