In addition to what the poster said, which is really spot on in its generalities, I can share: my opportunities come from (1) my former coworkers and (2) direct pitching to RFPs.
Re: (1), when the poster says "people skills," he means you will not source work from engineers. Additionally, you are not likely to source work from most big-company product managers. It's all about who is in a position to work with vendors in the first place. These will be "ideas" people, people you meet at business school or business-school-lite multidisciplinary design schools, people who themselves may have limited execution capabilities but have the "people skills" to... tell you what the big company wants and how to format your docs and pass their vetting process. People who aren't hung up on just telling you like it is - people who aren't pedants. People who are the opposite of most engineers.
In this respect, startup and big SV jobs will not lead to drowning in freelance work. Go to an exciting grad school, work at a large philanthropy, work in politics, work in research, consulting, etc. - things where you primarily interact with businesspeople who have vendors.
Re: (1), when the poster says "people skills," he means you will not source work from engineers. Additionally, you are not likely to source work from most big-company product managers. It's all about who is in a position to work with vendors in the first place. These will be "ideas" people, people you meet at business school or business-school-lite multidisciplinary design schools, people who themselves may have limited execution capabilities but have the "people skills" to... tell you what the big company wants and how to format your docs and pass their vetting process. People who aren't hung up on just telling you like it is - people who aren't pedants. People who are the opposite of most engineers.
In this respect, startup and big SV jobs will not lead to drowning in freelance work. Go to an exciting grad school, work at a large philanthropy, work in politics, work in research, consulting, etc. - things where you primarily interact with businesspeople who have vendors.