[Chyzwar]

One True Version force you to move whole company in the same pace. Even if you have legacy project you need to keep updating because your dependencies are moving. In the same time if you want to refactor or redesign API you need to wait for all your users and communicate changes since you cannot have beta/alpha release.

I am guessing that in Google people they try to avoid above issue by creating and then depreciating a lot of projects instead having new major release. Older projects will become frozen because too many things depends on them.

This is visible in Google products that take years to change in any way. Gmail/Search are basically the same as long I remember. Given number of engineers in Google it is hard to see any output.