It is because you know you will likely miss one note, to avoid that you focus on every single note more than usual and end up botching a total of 5. Practice doesn't really address the root cause, it just makes it impossible to fail no matter how nervous you are.
Better approach is to calm yourself by sincerely accepting that you will miss one note and just follow through - mind blank. Most of the time you will just end up hitting everything, and if you do miss a note, it's fine, you've already accepted it.
Money/power doesn't corrupt, it liberates you from the consequences of your actions. It allows you to freely be fully true to yourself without fear of repercussions.