I will do the counter-argument: this app is from Instagram, so it might have an higher success rate. To have worked in big corporate, new products are often entirely managed by a division, and only a reporting is done to the central entity.
1. Boomerang - https://www.niemanlab.org/reading/instagram-launches-a-standalone-app-boomerang-that-turns-photos-into-a-1-second-video-loop/
2. Shopping app that was never launched? - https://www.theverge.com/2018/9/4/17819766/instagram-shopping-app-e-commerce
3. Layout - photo collage app https://www.stuff.tv/news/instagram-launches-layout-standalone-app-your-photo-collages/Boomerang and Layout functionality is built in to Stories, now. Shopping is also integrated.
That's ok, and in many ways preferable and transparently communicated in many cases. They spin off an independent application, build an audience, figure out what features best convert and migrate those to the primary platform and transition the userbase over to it. Rinse and repeat.
It allows them to try, learn and refine in a sandboxed environment and bring the best over.
They often talk of this process in terms of their "experiments"
Consider
1. Boomerang - https://www.niemanlab.org/reading/instagram-launches-a-standalone-app-boomerang-that-turns-photos-into-a-1-second-video-loop/
2. Shopping app that was never launched? - https://www.theverge.com/2018/9/4/17819766/instagram-shopping-app-e-commerce
3. Layout - photo collage app https://www.stuff.tv/news/instagram-launches-layout-standalone-app-your-photo-collages/