Maybe. On the other hand, people do things every day for the love of it that get little traction in the market place. It seems more likely this confluence is just a coincidence.
Malcolm Gladwell writes books about "success" where he uses many anecdotal (albeit fascinating) stories to come to a very vague conclusion of how people can be "successful". GP was referring to "qualities of success" (passion, writing something for yourself), which don't necessarily cause success.
Not just coincidence. I've bought quite a lot of indie games the last few years but Minecraft is one of the few I recommend, no, urge my friends to buy.