the people who you can hire today. Expertise. People who know more about something than the people who you can hire today. Resources. Lots of people who are available to get to work on something right today, instead of tomorrow.
in person. Work roughly the same time you do. Remote. Offices you can see photos of, staff you can have phone calls with. Hybrid. Someone you can meet with, but the real work is done somewhere else. Here be dragons.
to hire the same talent? A single developer costs between $75k-150k. A single designer costs between $50k-100k. A producer costs between $50k-$100k. Support staff, office space, insurance, taxes, float, etc.