However, when a system entails a combination of large, complex, and/or multisite hardware/software product developments, pure software methodologies don't generally scale well.

In one case, executives discovered a coating advertised as pure gold that masked a complex alloy, which included rare metals such as osmium, iridium, ruthenium and rhodium.

Moreover, developers are motivated by a complex set of incentives, which includes revenue potential, user reach, ability to raise funding, and the pure coolness or utility of a platform.