It was added in 2021 and the largest company with 114,043 members is the Fools Trading Inc ran by popular YouTuber, Seniac. You can use the in game currency to buy newer ships that can carry more or take a different type of cargo, you can also use it to customize the interior of the ship to your liking to make your ship feel a bit more 'comfy'.
The further away the port that you spawned it, the money you will get. The objective of the game is to move around containers to other ports to make money.