...buildings designed to be earthquake proof in areas where a serious quake might happen once a century. Similarly, homes purchased with loans funded through federal programs have to have flood insurance if they are in Zone A, the 100-year chance of flood area. And considering that the peak outcome is mass death, it's at least worth considering. Many safety features that were once considered too costly and/or inconvenient are everyday features of modern automobiles.
Anyway, my main point was not to insist such measures be taken, but wondering what they might, in fact, cost. $1,000 per door--$5,000--$10,000? I don't know.