This is correct - Through marriage I've met some insanely powerful people who fix our highways/build bridges on the East Coast. These mother fuckers are loaded and they're seriously assholes seeing as I would've never met them by chance and people with money stick together. This is the true answer. There are only a small number of companies who have the logistics/money to actually bid and complete projects like these. It also takes years to do one project, so when there is only a small number of companies who can ever legally / viability afford these jobs this is what we get. Every sector seems to have a big 5. Tech, Finance, Construction, etc;