I was one of the founders of Rotary Rocket.

While Rotary Rocket did do some manned tests, it was only a low-altitude test of the rocket-propelled rotor system for atmospheric flight. Impressive, but a long way from a spaceship.

As far as I know, we never offered the Roton technology to NASA. What for? Had we built it successfully, NASA could have bought flights or rockets like anyone else. And after we ran out of money, we knew beforehand that NASA would never be interested in putting money into it.

Later, working with HMX, we did design a cheap, reusable system for NASA's Alternate Access to Space project. Initial designs used surplus Titan II rockets (think Gemini) that are lined up in rows in storage right now. Had they proceeded, an alternative American-built method for emergency servicing of the Space Station would be online right now.

They weren't interested. To the best of my knowledge, the whole idea has been shelved.

Cheap, simple systems do not accomplish NASA's prime purpose, which is to pay large numbers of government employees and support many labs and centers.