I’d say getting the contract signed is already 1/3 of the total.
You need to be big enough to apply (requires investment), apply to many government contracts, you need to understand the legal terms, price them, understand the regulations, price them in, then price the software development itself and price any other provider (hardware happens very quickly), and if you guess wrong, like on 1/3rd of the projects, you’re in debt... and you have 100% chance of getting the contract if you price it wrong.
Getting the contract done is another 1/3 of the contract, and the lawyers to deal with disputes and prove that you’ve done the contract, is another 1/3.
