Simplest answer = jews but that doesn't give understanding. We have been going against trades for years. There is a deficit in workers with most trade workers being over 50. Then manufacturing has gone away from white people. A lot of manufacturing is done by replacement people or diversity quotas. Now add covid, boomers retiring in mass, and skilled labor is taught to be beneath people, you have a massive competency shortage. Add profits at all cost taught from the economic school of jews and nothing is cleaned or maintained unless forced by almost gun point. That's the baseline. Imagine if someone wanted to fuck with the system?