Having seen this happen a few times (although in Europe) it is almost always that simply no one wanted to work in that sector. It is a lot more common these days that children have gone off to university and gotten an education in something that actually interests them, and then naturally they want to work in the field instead. It doesn't even have to be as extreme as "vegans not wanting to take over a butcher's shop", but simply "I'd rather be an architect than sell farming equipment", even if selling farming equipment might pay better.