I got two offers at startups as a finance undergrad still in college because I networked my ass off. I found some companies and founders I was interested in, reached out, continued to develop those relationships, and then came into offers from said startups.
If you're not someone's best friend, then become it.
Killer post - I think this message really needs to reach the abundance of business students today. It's tough as nails to get something non-technical when you're fresh out of college and want to work in a startup. Everyone, often even the founder, is an engineer. You can teach an engineer business, but you can't teach a businessman engineering.