This article is bit off the mark. The "Sunk Cost Fallacy" is to continue pouring resources into a venture because of an irrational desire to get back your initi

This article is bit off the mark. The "Sunk Cost Fallacy" is to continue pouring resources into a venture because of an irrational desire to get back your initial investment. The fallacy part is that new investment will help recover old lost investment, even when it will more likely just be lost as well. A more rational investor sees that the previous investments aren't the best place to put the new resources, and instead should look for new opportunities. So, while much of the effort that's gone into JS over the years could be considered sunk cost, it's probably not YOUR sunk cost, (so you aren't irrationally motivated), and JS itself is a bright, growing ecosystem. What keeps JS in the lead now has nothing to do with sunk cost, but it's early success and the network effect. It's well known, has lots of apps written for it, and is ubiquitous. It's successful because it's successful and continues to be.