[tryitnow]

Yes, it's not like YC is discriminating against older founders. It's more like older founders realizing it doesn't make sense for them since they've developed a network, savings, management experience, etc.

Many of the benefits of an incubator (or even of angel investing/VC/etc in general) are the benefits of experience. No need to spend time gaining something you've already got and certainly no need to give up equity for it.