This is somewhat similar to Google Will Eat Itself, a project that has used Google Ad revenue to automatically purchase shares of Google. They currently own about $500k worth of Google and estimate owning the entire company in 200m years.
He's going to need more than $19 million. Besides Kickstarter probably being worth more than that, he loses 5% to Kickstarter and another 5% to Amazon billing.
See (photosensitive warning) http://gwei.org/