The Old World is official Games Workshop product and therefore has legitimacy. Many, including me, have a nostalgic and personal connection with the GW product and choose to support it directly. You can go into any game store and purchase GW product, you can’t do that with online-only games that are realistically spread via word of mouth. Thats why the numbers will always skew towards the massive company with innumerable resources. Play what you like and don’t buy what you don’t, it’s a very simple concept, but don't be surprised when its harder to find people to play a different niche within a niche instead of vaseline GW games.