I think the biggest change in general corporate management in my lifetime was the deprioritizing of the concept of goodwill. I’m not naive, businesses have always prioritized profit. However, there used to be this idea that pure profit maximization ruined your brand and reputation. You didn’t want to be known as the asshole company that nickel and dimes everyone or has draconian policies that make people hate dealing with you. Now the corporate mindset is seemingly that if anyone leaves any interaction with you with any positive feelings, you didn’t squeeze enough money out of them.