In the US to a first approximation, the regulations regarding construction companies don&#x27;t include auditing of internal processes such as those PlanGrid appears to be tackling. The problem is the relationships between margins, the potential cost of errors, and the volume of projects a construction company undertakes. Margins are low, the cost of potential errors can be higher than the initial contract, and contractors handle a relatively low number of projects. In other words: small reserves, very bad worst cases, and not much spread of risk.<p>If Facebook looses my post of a cat picture, the worst thing likely to happen is that I rant on Hacker News. If a critical deviation gets lost in the shuffle, people die...and lawyers get involved. [1]<p>[1] <a href="https:&#x2F;&#x2F;en.wikipedia.org&#x2F;wiki&#x2F;Hyatt_Regency_walkway_collapse#Aftermath" rel="nofollow">https:&#x2F;&#x2F;en.wikipedia.org&#x2F;wiki&#x2F;Hyatt_Regency_walkway_collapse...</a>