I have read a lot of talk about Core-competency in the past decade. I have seen companies make a mockery of the core-competency issue. I often look at the top management and check how many of the top management team came from "core-competency team". In most - hardly any. Many in fact absued it so much that management gurus like Tom Peters were left screming on their blogs!
Organisations have to evolve an ethic of honouring its core-competency. Forbes highlights how Honda promotes in engineers to top ranks - and not marketers or accountants - engineers! This is the truest way to honour your commitment to "core competency".
Hat tip - Paul Buchheit