The number of people who are willing to start something is MUCH smaller than the number of people willing to contribute once someone else starts something.
Enabling customers to collaborate with you - in creating, distributing, marketing, and supporting products - is what creates a premium in today's market.
In a world where there are many wealthy people, then, and many more types of wealthy people, there are also more idea machines, and a more liquid idea marketplace. If you’re an “idea operator”, instead of having to beg one of two funders to take your idea seriously, you now have many more potential options to shop around to.