The story suggests Google continues to invest more in this project to compete with Amazon, and to help lock in consumers that would have moved away from Google and used Amazon as the original destination.
I can quite well believe it's important for Google to keep consumers on its domain.
Though Google over the years had experimented with letting consumers buy goods with the help of services such as Google Wallet and Google Checkout, it accelerated this strategy in 2013 with Shopping Express. The service lets shoppers buy things from local retail stores through Google, which then delivers them to consumers from the physical retail store on the same or next day.
A source familiar with the company’s plans says senior Google execs have set aside as much as $500 million to expand the service nationwide. Google declined to comment on the size of the investment but made no secret of its ambition.