I even tried to run their “Managed” K8s cluster, and it was far more difficult than AWS EMR or Azure HDInsight (never tried Google’s equivalent). No way to run scripts when cluster is initialized (apart from using something like Helm; doable but not simpler than AWS), no easy way to choose preconfigured environment (i.e., Spark or Hadoop). D.O. basically provides a simple interface to spin up a VM. Their command line client isn’t any simpler than aws-cli or Azure “az” which also has simple features like integrating well with PowerShell and OAuth2 client login from terminal. Even Spaces was no simpler, than S3 or Azure Blob Storage
Heroku, Meteor, Firebase, Lambda Functions, Google Cloud Run and I'm sure there are others that I can't name off the top of my head.