This is a good problem. The solution is to raise the bar: in order to be a professor you have to make a tangible advancement in your field, something that advances the state of the art by an order of magnitude.
Research is expensive and funding is hard to come by. Therefore, if you want to have a job next year, you end up doing 'safe' experiments that only incrementally advance your field.
In order to get funding for more radical ideas, you need to have a history of good results (and past funding). Which usually means you have to be a professor already.
(Also, many people who aren't professors, such as postdocs, cannot directly get funding from many funding agencies. They usually require you to be a professor already...)
You just denied tenure to Albert Einstein.
(Luckily, in real life, he was appointed a lecturer in 1908, three years after finishing his degree, and became an assistant professor in 1909 and a full professor in 1911.)