In the past 20 years, I've lived across the major metro areas of Seattle, Silicon Valley, and now Los Angeles. in all places, it's been common practice for delivery companies to leave packages outside unless the shipper has specified otherwise for a high-value or theft-prone item.

Over literally thousands of deliveries during that time, the number that have disappeared mysteriously is under 1%. In fact, more have not been delivered at all (i.e., fraud on the part of the delivery person) than have been stolen.

1% is pretty high theft rate. 1% means if you get a package every week, once in 2 years one will be stolen. Or it means in a city of 100,000 1000 people will have thefts of their packages.

"Around the country, more than 1.7 million packages are stolen or go missing every day" (no indication what % this is)

https://www.nytimes.com/2019/12/02/nyregion/online-shopping-...

A different way of looking at it is, with ~5 packages that were likely stolen out of 2,000 or so delivered, that's about a 1/4% loss rate, which is much lower than the typical retail store suffers from shoplifting.

So, it's pretty much priced into their margins already.

Its pretty common in non-rural areas in the US. I live in a suburban area and its normal. Some of my coworkers who live downtown have had issues with porch pirates, so I'm assuming they have porch drop off as well.