If I understand it, the premise of this article is that because the marginal cost of software production is now free, now nobody can compete against garbage quality code sold by the slickest "sales critter", so everyone should just give up.

I mean, it seems at the very least, that open source and in-house production has a natural advantage here? If the marginal cost of software production is now free, then FOSS/in-house just got easier to create and maintain too. Does that make it easier for FOSS/in-house, both available without a subscription to an external third party, undermine "sales critter" SAAS, by the author's own premises?