As soon as the market actually incentivizes it, which it almost never does, it will get better.

Most of the big companies just throw endless interviews, high pressure firings, and a lot of money at the problem and make the people below them solve the rest of the problems.

They see how much they are paying for the mess, but any medium term effort is torpedoed because of all the other things the business focuses on (lack of resources for the process and training), and other powerful individuals who want to put their own brand on hiring and firing who have significantly more ego than sense.