No! They were too busy hacking phones and building things people wanted to waste time to go through the application process of YC. Money was chasing them.
This is true for most runaway successes, they were all true hackers that broke things: Facebook, Apple, Microsoft, etc. Not the "hackers" who are asking for $125k salary...
They didn't care about the money, they didn't care about the allure, they didn't care about the status. They just wanted to break things and make them work better, legality aside.
But the landscape has changed, and Steve & Steve are not just starting Apple and YC would not be around if Apple wasn't started when it was, so it's a silly question be it a fun thought experiment.
I think YC supports the companies that shoot for the moon, but people aren't willing to take the risk and say no to acquisitions of $20-$100m because that is the short term business model of today and people just want to take their $5m and show off.
"The approach of remaining independent, and investing profits back into to the company followed by technology zealots such as Jeff Bezos and Steve Jobs is unattractive to an investor."
They only way to counter this is to build a great product with little to no money and have it grow like a weed, then negotiate like a mob boss to keep the majority of the voting rights of the company.
That's enough for now, time for focus...