What is the worst case scenario of lots of YC clones? Zero successful startups, zero investor exits, a bunch of people who have tried at least one startup, and

What is the worst case scenario of lots of YC clones? Zero successful startups, zero investor exits, a bunch of people who have tried at least one startup, and slightly fewer programmers working in industry? Is this really that much worse than the alternative, that all these founders work for BigCo?