I hard disagree here. That's what capitalism wants us to evolve into: individual enterprises. But no, there's nothing inherent in the universe or human nature that determines individualism as the true way of working.
You don't have to go far to see people contributing to bigger causes that are not owned by someone else. Open source is a great example of this.
The main reason people idolize entrepreneurs is because they symbolize capitalism's perfect individual. There's a reason society today wants everyone to be an "entrepreneur", but it's not some higher meaning. It's just capitalism.
