You are essentially correct - rugby is a game of field position and there are enough players on the field that you can simply lateral the ball to the next man before taking a huge hit and play continues. Having played both American football and rugby, I will say the individual collision is more spectacular in football but getting rucked in the head by 3/4" metal spikes is no walk in the park. I was always more sore after a football game but had far more cuts and bruises after a game of rugby.
A well established company with a nice product but no revenue generating business model partners with a bunch of hotshot entrepreneurs looking for a startup idea (or pivot) - I wonder if Quora is going to provide a kind of Q&A based platform which creative startups can leverage, almost like a Quora branded YC mini-batch.
The startups would have immediate access to Quora's user base and a space to focus on (Q&A value added services). Quora gets an infusion of fresh ideas without have to take the risk themselves. Quora could develop some fee based structure for its platform and look at acquiring the most promising startups.