Cona had lots of things, but water wasn't one of them. For this reason, not too many speices could survive there. The Arcona didn't need water, but they were jerks anyway. Eventually, Moisture Farmers began selling water on the planet. Since water was so rare there, it was a highly valued commodity. Since they neeeded money to buy more water, the Arcona opened their planet for all sorts of mining and drilling. Smuggling also became a pretty popular occupation there.