There does seem to be something interesting about how less successful* YC alumni now seem to be becoming partners. And, of course, Sam Altman himself is the ultimate case of this.

And, on the one hand, it certainly makes sense. All of these people have been through the YC process and used it to achieve a measure of success. Also, the Drew Houston's of the world are generally available to be partners precisely because of their success (they have companies to run, after all).

On the other hand, it can seem a little incestuous, and that's certainly something to guard against given the nature of tech in general. Too often it seems like organizations become victims of their own success precisely through this sort of "inbreeding".

*: "less successful" meant very charitably as they're only less successful when compared to i.e. Dropbox and are certainly more successful than most YC founders, let alone all founders.