If Google was about utilizing commodity hardware at scale, the next generation of startups will be about utilizing commodity cloud at scale.
Going organic means only using natural cloud resources: storage, compute, and standardized APIs. It means avoiding any infrastructure that is too processed, like high-level platform abstractions and opinionated workflows. S3 is organic, AWS Elastic Beanstalk is not. Kubernetes is organic, AWS Fargate is not.
Going organic is about optionality and cost - not just about multi-cloud or repatriation (moving from cloud to on-prem). Companies that are nimble enough are already thinking about this. Uber and Airbnb already have large multi-cloud spending commits. Standard and open APIs beat out proprietary ones - from Kubernetes to OpenTelemetry to Terraform. Even the best proprietary APIs like S3 quickly became commoditized.
Cloud providers know that it's a race to the bottom for compute and storage, so they compete with higher-margin differentiated offerings. Organic cloud infrastructure gives optionality. Whether that means repatriation, multi-cloud, or getting a better deal on your cloud contract, organic is good for you, processed is not.