[cetico]

I worked at Google for almost 10 years. In my experience, these end-of-life projects often get shutdown because nobody wants to work on them.

There are a ton of interesting projects at Google for people to work on, so people select for interesting things with potential high-impact. If a team can't be formed to own the product, maybe someone will volunteer to take care of it in their 20% time. But there are these company-wide mandates to move production systems from a storage system to a newer one, and a part-timer doesn't see the point of doing such thankless job.

Management can also play a role. If a VP wanted to support the product, it would get supported. But they use the basic heuristic as above ("is this an interesting project with high potential impact"). In this analysis a VP is just a proxy for 100 engineers making the same decision.