I agree. The big idea behind Uber is to optimize capacity utilization. That's also the reason why it's a race between those taxi apps to get global scale first.

I agree. The big idea behind Uber is to optimize capacity utilization. That's also the reason why it's a race between those taxi apps to get global scale first. Unlike cars, maids and masseuses don't waste 90% of their time doing nothing and there's also not going to be a population reduction by matching supply and demand for these verticals a little bit better for iphone users.