Are we forgetting that most companies exist to make money?
Making profits usually means cutting operating costs and attracting lots of customers and selling lots of the services or things your company supplies.*
The company owner does not really care how unhappy or tired their employees are, they only care that the product is made as cheaply as possible and is sold to as many customers as possible - to make ever bigger profits to keep them (the owner) on their yacht with their huge pension and share options.
Your manager does not really care who you are, or if you are unhappy or tired, as long as you turn up to work and do your job properly.
The company does not really care how satisfied the customers are as long as enough customers keep buying the product.
Customers who are dim or stupid, or who don't know how to behave, do not by definition, realise they are being dim or stupid or are behaving badly. Many customers will choose a product or a flight or a company that is cheaper - even quite literally £1 or $1 cheaper - than another with no thought whatsoever about the quality of the product or of the company supplying it. This relentlessly drives down profits, so operating costs have to be squeezed ever harder until ultimately, the product starts to suffer. In extreme cases, the company can fail, but the owner doesn't really care - they own their yacht and have their huge pension to fall back on.
*Companies supplying to the rich and super-rich need to adopt a different approach, where high quality of service or product is needed to attract those customers, but these companies still make profits.
Food for thought?