I think that there is a cost to companies operating this way, but the cost is largely unseen or harder to account for. Arguably doing everything opposite of those points can be "good business sense" too. For example, going with the mindset of investing in your employees.. two of the points below:
> Companies using the barest of excuses, or none at all, to lay off employees
The intention is to streamline everything and cut costs and improve efficiency for the business. However, doing the opposite here helps preserve tribal knowledge (possibly leading to better business outcomes). It helps improve retention because it creates an environment where employee isn't constantly optimizing for the best compensation and looking to jump ship at the first better opportunity.
> Companies lying, deliberately and freely, to employees about upcoming layoffs, in order to "stave off panic". Because it makes good business sense.
Doing the opposite leads to employees being more focused at work. Instead of prepping for the next interview, they can focus their energies on company initiatives.