Nothing, it's just hard. The problem you trip over is retention of strong employees.
Many strong employees are ambitious and need the prospect of progression to be happy with their job. When growth slows below the employee ambition rate, not everyone can be sustainably paid more. Then you're faced with a choice of removing people to make space or employees being unhappy.
You can let this equillibrate naturally. The employees who are both ambitious and skilled enough to land other jobs will disproportionately be first out the door, leaving room for others. But this reduces the average talent level, and hurts company prospects, so many companies choose other paths. Some proactively fire the bottom 15% every year. Some heavily differentiate pay to make up for lack of promotions. Some constantly reorg and fail to find spots for employees in internal interviews. Offering a paid out for those who were thinking about it anyway seems a uniquely humane solution.
Agree. Early in my career I was in an org that had been fast growing but then sales went flat. I was effectively told that I could not be promoted because there were already too many people at level N+2 and N+1. I told my M2 that this to me meant we'd all just grow old together and the org would be static. He didn't disagree and I transferred to a new org which although it was also not growing, did have a leadership gap and a growth path for me.
Many strong employees are ambitious and need the prospect of progression to be happy with their job. When growth slows below the employee ambition rate, not everyone can be sustainably paid more. Then you're faced with a choice of removing people to make space or employees being unhappy.
You can let this equillibrate naturally. The employees who are both ambitious and skilled enough to land other jobs will disproportionately be first out the door, leaving room for others. But this reduces the average talent level, and hurts company prospects, so many companies choose other paths. Some proactively fire the bottom 15% every year. Some heavily differentiate pay to make up for lack of promotions. Some constantly reorg and fail to find spots for employees in internal interviews. Offering a paid out for those who were thinking about it anyway seems a uniquely humane solution.