Not as long as products are built on top of proprietary internal SDKs such as google3, borg etc. Google started to open source some of the internal projects (e.g. bazel), which, among other things, would make it easier to just donate / spin off a project they are no longer interested supporting.
I worked at a Google spinoff a few years ago. It took a lot of work to move everything from internal Google infrastructure to external (Google Cloud) and it probably took a full year after the official date of us leaving Google to have everything fully migrated - there were lots of small things like seldom used config files or occasional scripts that still relied on Google’s internal stuff.
