Sorry CP, but as much as I love the idea, I think you're onto a loser.
I can see the gist of where you're going, but there's a few glaring flaws in your plan. Firstly, I would worry about its scalability. I mean, once you've cornered the rigs, where do you go from there?
Also, its not that unique an idea and you can't protect it. I'm sure Peter Jones and his vast business empire would be able to get the business off the ground and nab all the glamourous retail space available before you got back to the lift.