Are orthopedic startups playing it too safe in 2020’s ?

Where are the moon shots today ?
In this decade, we just don't see orthopedic startups taking moonshots like the startups in the 1990s. More startups in the 2020's are focusing on incremental missions, not moon missions.  Where is the next Kyphon today ?
Why is this?
One possible explanation is increased competition. With more players entering the market and the barriers-to-entry becoming lower, startups are pressured to focus on short-term goals and achieving incremental progress rather than pursuing long-shot moonshots. 
Additionally, investors may be less willing to fund high-risk ven...