Only that game development is not really like building a house on that aspect.
Specially when we talk about bugs, that are usually not the priority over the technology, and core features being fully at place. On a game like SC, where they have to release one early alpha, of what will become the PU, they do have to maintain it some a basic extent when it comes to bug-fixing and optimization. And that's what they do.
As Sean Tracy explained before, there's places of the game they won't fix bugs on, because they do are working on systems that will replace current place-holders or other releases that will fix the problems. Hear by, putting developer time and effort into that, is wasting time. For example, the old EVA (to be replaced on 2.2), the Repair and Re-fueling Mechanic.... The old animations, the old damage models, and stuff like that that were also cases of this.
It all falls into Game Development really, some games do choose to release something when it's already pretty finished... SC instead, releases early, and improves over time. Example of this is AC.