While in the literal sense, you get opportunity from others, I think people get stuck in a mode of thinking that they need to get lots of money to pursue some vision or objective that they want. It becomes a mental barrier where they say, "I can't do this because I don't have a million dollars" Where in truth, there's more than one way to skin a cat.
Just because something takes a million dollars to do, doesn't mean that it has to be your million dollars.
I think Jason Fried's just saying "Be relentlessly resourceful" in a different way. You don't need anything like lack of personal money to stop you from doing what you want to do.
It's odd to me how many on HN readily accepted pg's "Be relentlessly resourceful" idea, but when it comes to the idea in a different form, how many rally against it.
"Be relentlessly resourceful" applies to things beyond startups, from paying your kids' tuitions, getting to drink mojitos on an island, and pursuing your economically unviable project.