[pmjordan]

As a not-so-cheap (by local standards) programmer, I'd have to agree with this assessment. Sometimes, customers will ask if it's possible to reduce the budget for a contracted piece of work by getting some of their internal staff to do parts of it. I've tried to make this work, but it basically doesn't in most cases, for the reasons you mention. On the occasions I agreed to try it, it would have ended up more expensive, even when assuming internal staff time to have a cost of zero. Fortunately I agreed to try it only on the condition I could bail out and do it all myself if it wasn't working. Which I did.

I realise this may come across as me being arrogant or unable to work in a team. I can't with good conscience pass judgement on the former; I am however frequently contracted as an extra brain and pair of hands on projects with people of comparable skill who could do it without me, save for the project's time constraint. This generally works very well.

It's conceivable that the model might work if the skill gap isn't so big. Presumably that makes the programmers less cheap, and the scheme less attractive. Plus, they could probably muddle through without me, thus never feeling the need to hire me in the first place. Which, I assume, is why this has never happened to me.