I see what you mean now. My point is that even if there's a minor screwup, the architect probably won't be prosecuted for anything because the building won't fail catastrophically thanks to modern standards which have substantial margins of safety built into them. It really does require criminal levels of negligence or extreme circumstances that would almost certainly save the architect from prosecution to have a building collapse on you.
On the other hand, a minor screwup in software is far more likely to cause catastrophic failure because we just don't know how to workably build large, robust systems out of code.