Following the Steam Discoverability update in September 2019, some indie developers have seen a huge boost to sales.
Valve introduced the update as a way of better personalising recommended games. Previously, the games recommended on both the home page and store were tailored towards the most popular games. The experiment that took place on several members of the Steam community showed a 75% rise in unique games visited.
According to a recent VG247 article, publishers such as No More Robots have seen a significant boost in wishlist placements. Unfortunately, not all indie developers have received the same treatment. Other sources, such as PC Gamer, suggest some indie titles have received less promotion on the marketplace.
Valve will likely apply some changes to the recent update following the mixed response but thus far has remained silent. Since the update is still relatively new, the data gathered in the following months could help improve indie visibility.