Good point, although Google's internal monitoring systems are pretty good (even aggressive) at detecting abandoned, low-use, or high cost un-approved systems. I've gotten a number of my old projects flagged by automated monitoring, and asked to delete them, shut them down, or move them.
In recent years, there actually is an internal framework for standing up servers quickly along with end-to-end everything else a Google production service usually gets. The frontend uses Wiz. It's still not as easy as say, NextJS/Vercel, or Heroku, or even throwing together a Kube deployment, but it does provide a lot more than any of those, so the medium learning curve pays back quickly.
In recent years, there actually is an internal framework for standing up servers quickly along with end-to-end everything else a Google production service usually gets. The frontend uses Wiz. It's still not as easy as say, NextJS/Vercel, or Heroku, or even throwing together a Kube deployment, but it does provide a lot more than any of those, so the medium learning curve pays back quickly.