Ask HN: Why do you have to do something extra to get promoted?

I am working from last 12 years in software.During this time I have worked with couple of startups and some fortune 100 companies.When I started my career, during my 1:1 it was always told to me that I have to do something extra to be promoted, which indirectly meant work on something extra other than your usual day to day job. Now I am an EM and during my conversation with my peers it's same. They don't want to promote a person who is doing their job effectively. They want someone with that extra edge. Why is it like this? Why can't I just do my work go home and enjoy my free time.Why do I have to put in extra work over the weekends or in my free time to build something extra to get promoted. I am fed up of this.