For instance, take something with a small marginal benefit like a dedicated person at a supermarket to bag groceries. It's a nice to have but the value to the employer is probably less than a $15 minimum wage. So you could say there is a shortage of grocery baggers since there is no one willing to do it at a market clearing price.

Doesn't mean we should do anything about it. There will always be some extra activity that would take place at a lower price, but it's worth while to notice that.

Also, in addition to planned obsolescence and repair hostility is Design for Manufacturing (DfM) that doesn't care about maintainability, safety, comfort, or durability, only lowest cost to shove things together on an assembly line. This is why there are some cars that require removing the wheel well to change the oil filter and other that have things completely out-of-order or require absurd tools to service. My grandfather was a 30 year Chrysler dealer mechanic who had a dozen or so custom tools for very specific purposes.

Source: Dad had an A/C & electrical mechanic shop next to a Porsche specialist shop.