My friend is an animal and came right in with a plan and process, making 80 calls a day, working all of his contacts, grew the pipeline, and over a year made nearly $1 million in commissions.
Then they CFO backed out on the agreement! "You can't make this much money, you would be the highest paid employee." Even though he made them far, far more than he took in. He stayed and got a decent chunk of cash but had to settle mostly for stock options (recent update: massive covid layoffs!). If you are paying a sales commission it's because they made you more money. It's called incentive alignment.