The curve is not the main trouble. The trouble is garbage content promoted by boosters without any revision and quality assurance. Also, big number of different boosters which drives the head crazy. Even if one legit author with quality post decides to legally promote his/her post, he can't do it easily.

Author needs to perform deep research on which "Promotion Service Provider" to use. Most providers requires to input very big investments to overcome the swarm of shit-posters with big cash.

Low quality content boosters make so huge noise! Newbie can't afford to join these gamblings. So, they just become unseen and hungry for readers.
No readers, no reason to post a quality.