[dangerface]

Yes this happens all the time the client asks for the world but really just wanted an improvement.

The client has a problem and asks us for a solution. We suggest a simple cost effective solution, client insists on custom software developed to their spec they have "perfected". Client lists all their nice to haves as must haves so they get their moneys worth, not realising I just charge more for more work.

The software is delivered to spec, then the client realises that their spec doesn't work in the real world because they just assumed the best and forgot about edge cases.

Non-tech companies just don't get tech, instead of seeing building software like building a house they view it more like a wizard does magic then a website appears.