Should the Xbox "Double Down" on Original Games

Reading some of the coverage from this year's E3, I couldn't help but feel like what people wanted to see from Microsoft (other than a new box) was new games. Microsoft has done a lot of work building up the ecosystem as far as entertainment so maybe it's time to do the same with gaming; especially in delivering new titles or hell poaching from SONY's basket.

So should the Xbox team refocus efforts on pumping out new titles, bring over titles like Heavy Rain, or merge with SONY games?