"This is one area that YC has a strong incentive to act in, but hasn't."

This is an interesting thing to consider. If you look at the current president of YC (sama), at least from an outsider's perspective, he's the beneficiary of exactly the type of behavior you're trying to get away from. Based on his company's exit, he is now a VC, but his company was acquired for essentially what it raised, meaning the employees' stock was likely worthless. I have absolutely nothing personal against sama, but let's remember that YC doesn't exist as a charity, it's a business.