MongoDB is choosing a dinosaurs business model, and it's going to hurt them and their ecology.
Mongo the org should play MongoDB like Google does Kubernetes, Golang, Chromium, etc. Have your people in there, funded, steering the project as 'FOSS' while you release actual products.
Mongo dropped the ball by having no on-ramp product like GCPs Firebase. Their Cloud provider hate is just a flailing reaction to bad business and existential fear.
Stop being a crybaby when someone makes a few forms and buttons that spins up a vm with your DB software running. Of course cloud providers would want a tight integration with their systems.
Managed Kubernetes on AWS makes k8 stronger, managed Firecracker on GCP and Azure makes Firecracker stronger.