When Canon first brought out it’s forward looking R line of mirror-less cameras they took the opportunity to invent a new camera mount that would lead to exciting new lens design.
The downside to these exciting new lenses with new features like a control ring was the cost of all of this innovation. The first lenses released were all over $2K per lens and aimed at professionals.
Finally, Canon has released a line of affordable prime lenses including the 35mm f/1.8 Macro, the 85mm f/2 Macro and the most compact and affordable lens yet the RF 50mm f/1.8 STM.