> Also in moderately big to big companies, is all about contacts and personal marketing, which could (and typically is) orthogonal to your actual work.
As you go up the levels that is exactly the job (for better or worse) so doing that is doing the work at the next level. You are organizational glue that connects people and ensures your team has proper visibility. If you didn't see it that way then that may explain your problems with promotions.
It does not have to be so, and in some companies is not so, notably the ones which thrive and meritocracy rules. Is a big fallacy to think all is politics, IMHO.
Between the most junior developer and the CTO, and all in between, is about taking good decisions, communicating clearly, and owning errors. If it is a healthy company with competent management, there is no need to make a powerpoint of every fart you shoot. Now the reality is, big companies are run typically by incompetent people with "cover your ass" mentality, with lots of internal and external corruption and nepotism. See Dilbert. It doesn't mean is the only model.
> If you didn't see it that way then that may explain your problems with promotions.
Big no. I totally knew and saw that, clear as day. But if when the position is open the nephew of the boss'es boss is looking for a job, you are just out of luck. Also if your boss is constantly talking bad of you anytime anyone internally asks for you.
As you go up the levels that is exactly the job (for better or worse) so doing that is doing the work at the next level. You are organizational glue that connects people and ensures your team has proper visibility. If you didn't see it that way then that may explain your problems with promotions.