> The 20-something founders who "grind" are not more successful. Was there ever a consensus that 20-somethings who grind are more successful? I don't think so.

> The 20-something founders who "grind" are not more successful. Was there ever a consensus that 20-somethings who grind are more successful? I don't think so. They simply do not have the requisite broad life skills that are required in business to succeed. They may have the energy, grit, a narrow set of skills and then stumble upon a goldmine product, but the combination of these factors results in what, a 1-2% successful exit rate? As for the answer of "is it sustainable", it really depends how rich their parents are and how much they can fail upwards. Apparently, there are a lot of rich parents in the US.