The art and skill of working with bureaucrats
Have you noticed that most airports feature the same restaurants? It's not an accident. The people who run these chains have organized themselves to be good at dealing with municipal organizations.
Same thing goes for design firms, creative firms, accountants etc. that deal with large corporations.
In my experience, 40% of the fee goes for the work and 60% goes to pay for the do-overs, staffing, project management and hassle that comes from working from big organizations and committees.
A lot of small businesses get burned when they charge just the 40% and the client expects that the other 60% comes for free. It doesn't.
If you want to be good at this capability, you can. You can buy it and learn it and then turn around and sell your skill. But it's unlikely you will randomly back into it.