But that's implying that working at Google won't be as rewarding. There's a lot of pressure to execute and iterate and so on when you're doing a startup. People sometimes forget to sit down and relax. Being in a less risky, less stressful position at Google can give you the important insights you need when you really start your business.
I also submit that it'll be easier to quit Google when you've discovered your home run idea than to change your entire business.
"Being in a less risky, less stressful position at Google can give you the important insights you need when you really start your business."
You could not be more wrong on this point. Being at google is a recipe for complacency. Quitting your job is incentive to actually figure out how to build something good. Because it's do that or fail.
I also submit that it'll be easier to quit Google when you've discovered your home run idea than to change your entire business.