Why did the employees keep working? Were they promised more money in the case that Pandora did work out? Was the day to day job there enough of a perk that they

Why did the employees keep working? Were they promised more money in the case that Pandora did work out? Was the day to day job there enough of a perk that they didn't mind that the expected present value of their wages was low? Or were the costs of finding a new job really high during that time period in that area so that there were better alternatives but they couldn't take advantage of them?