Eli5: how have supply chains not recovered over the last two years?

Question

I understand how they got delayed initially, but what factors have prevented things from rebounding? For instance, I work in the medical field an am being told some product is “backordered” multiple times a week. Besides inventing a time machine, what concrete things are preventing a return to 2019 supplys?

In: 93

Answer 1

Imagine you built an awesome rune goldberg machine and someone decided to trow a hand grenade at it.

Everyone who worked on it quit and now you have half the amount of people trying to get the pingpong ball trigger the record player but half the team has never actually seen how it used to work.