Well, we have studios like Blumhouse that create low budget movies that do get a lot of press, have trailers, get plenty of promotion etc. They do well on an ROI basis. But they don’t top the box office.
Since 2014, all of Blumhouse's movies are owned, distributed, and co-produced by Universal Studios. Well, except for their BH Tilt division, which is partnered with Neon for co-production and distribution. Their most notable low-budget film that kickstarted their rise was Paranormal Activity, which was straight up acquired by Paramount Pictures for an actual theatrical release.
Blumhouse wouldn't be where they are without the juggernaut's purposefully propping them up.