What I'm describing is friction. In a market where demand changes over time, supply friction affects efficiency. The time scale over which the market reaches equilibrium and that time scale's affect on the people providing supply is what I'm talking about.
And you will find a very crowded place, populated with all the other guys who leant the job yesterday.
> I've wondered if this is part of the reason for high software salaries. When so many industries needs software,
You are describing demand and offer: nothing more, nothing less.