IMO the benefit to being an entrepreneur is that if you truly have a winning idea, you can own a lot more of its fruits by pursuing it from your own business. For it requires nearly the same skillset to procure VC as it does to persuade a large company to let you build something. Risk is and should be proportional to return.
To that end, I have nearly 20 patents filed from within large companies, most of them single inventor. And my salary amortized over a 4-year startup life cycle is on par with what I would have gotten as a non 3-letter title at an acquired startup that wasn't a Google or a Facebook.
So why take a chance on failure without the chance of a big payout? And except for the 3-letter titles, that's what a lot of newbies unknowingly sign up to do, risk >>>> return. I have no desire to socialize this learning experience for them.
To some extent, but big companies are likely to be much more conservative towards new ideas. If they weren't, there would be little benefit to being an entrepreneur.