How often do people really negotiate PTO? I have been flatly refused the times I have asked about it. It seems to be much more difficult than negotiating sala

How often do people really negotiate PTO? I have been flatly refused the times I have asked about it. It seems to be much more difficult than negotiating salary or other comp. Companies handle those individually so they are used to negotiating on them. PTO is often handled at a departmental or company level and companies can be hesitant to make exceptions for an individual employee.