Joel Spolsky – Headcount:

"If everybody in the world knew about your software and was encouraged to evaluate it, the number that would buy it would be (Earth population) x Quality.

[…] Double the quality, and the same sales effort yields double the revenue.

[…] The offshoring that does happen is strongly biased to custom software development which, by design, can only solve one person’s problem, so more developers than marketers are needed."