Disney announced back in November 2018 that it would be creating its own streaming service that exclusively owns all Disney titles. The service will include content from Disney's main studios, like Walt Disney Pictures, Pixar, Lucasfilm, and, of course, Marvel Studios. This means that all films within the McU will soon only be available on Disney+. So whatever films are currently on other streaming sites, like Netflix, will steadily be taken down leading up to the service's launch date.
On the plus side, fans won't have to wait long to watch the adventures of Carol Danvers and her adorable furry sidekick. Captain Marvel