There are immediately two factors in my mind that affect the bigger picture:

1. They are LYING. Most positions that they are complaining about take less than 6 months of intensive training to do well. Everything is designed for the lowest level they can use to get the job done; good employees are just a bonus. Most are lobbying the government to bring in foreign workers so that they don’t have to pay them as much money and they get university or trade-experienced workers for the price of an unskilled local sourced worker (or robot). Operation Paperclip redux.
2. Most of the stuff that companies are competing to produce is not necessary to the future of human survival. Ergo, they can play all manner of games with their workforces and local civil tax base because if they go out of business and stop making whatever useless widget or program they are selling to mind-numbed Americans, it won’t cause some great mass of people to be hungry enough or skilled enough to pick up pitchforks and torches and sail to the Cayman Islands for their money. The American farmer (or his robot replacements) will feed the world via petroleum until the banks that own them say to stop.

2A. There is a coming exodus of farmers as the Boomers decide they are tired of being jerked around by politicians and processors and their kids are all working for coastal cities. Enjoy your corn flakes and soylent rainbow bars from the global Amazon pipeline.

Most contemporary economics are based on perceived growth of useless production of debt-based consumptionism lifestyles and imaginary infinite supplies of raw materials. Deciding how many jobs there are is kinda moot at this point. We’ve finished rearranging the deck chairs on the Titanic and now we’re just shoveling the remaining coal onto the iceberg.