Run a taxi company? Thanks but no thanks -- that sounds far too much like work to me.
I'm sure this game must be more entertaining than it sounds, but you might do better if the website makes it more clear where the fun part of the game is.
I agree with your second point, but there's plenty of games like that: Sim City, Any Tycoon game, the economy aspects of RTS (where the fun is obvious), Diner Dash etc.
As the Wii Fit has shown, games are a good way to trick people in to doing work...or exercise :).
I'm sure this game must be more entertaining than it sounds, but you might do better if the website makes it more clear where the fun part of the game is.