all businesses are the same once you remove what they actually do
no offense, but this makes almost no sense. I mean, I guess when you remove what reader's digest, ycombinator, and my local model train shop all actually do, they're "the same" in that they have customers and exist to make a profit, but that's hardly a practical or helpful piece of information.
In other words, the business advice, perspective and experience YC bring will apply just as well.
Note - this is based on my understanding, which is that YC help with the business not sitting down and helping you code.