I think Josh's point was not that you needed virality. Virality is just one way to get distribution (albeit a very efficient way). Josh's point was that dist

I think Josh's point was not that you needed virality. Virality is just one way to get distribution (albeit a very efficient way). Josh's point was that distribution (aka Customer Acquisition) is hard and you can't just 'bolt virality on' as an afterthought.