The problem is usually finding a balance between "Let's hack some suicidally awful crap together quickly to see if we even have a market and then fix it when we have real income, except everyone knows we won't so it will be a permanent drag on the business" and "Let's build a beautiful extendable maintainable paragon of elegance and purity and ignore the fact that it'll take three years when we have six months of runway."
Too far in either direction will kill you. The sweet spot is between those extremes, and finding it is extremely difficult.
It's unhelpful that there isn't a word to describe aiming for that balance, never mind hitting it.