Incremental Infrastructure

Ethan Zuckerman builds on his Incremental Infrastructure concept:

[T]he idea is to build essential facilities -- telephone networks, power grids, roads -- in small pieces using private investment, instead of relying on large, centrally planned, government-run projects.The rise of mobile phone networks linking more than 100 million Africans across the continent and the blossoming of cybercafes from Cape Town to Dakar are evidence that incremental infrastructure is already transforming the continent. But Africa needs go beyond telephones and computers. Many nations lack roads, electric power, schools, hospitals, clean water. If the lessons learned from building telephone and Internet systems can be applied to other types of African infrastructure, African entrepreneurs could find themselves wiring villages, paving roads, and perhaps even building airports -- building the new Africa while turning a profit in the process.

I’m wondering whether he’s too quick to extrapolate the mobile phone phenomenon to other areas. I’m especially thinking about big ticket items like roads and power generation/transmission that don’t have the same option of being subsidized by the consumer. Also the incremental and even moreso the “pico” approach does not address needs on a macro-level that most countries in Africa need to address, having power in the village is great but if factories / business can’t operate at an optimal level because of power shortages or costs there’s still a big conundrum that needs be address (and unfortunately the role of government can’t be wished away).