Former Googlers have always said that the big issue with sustaining products at Google is that it is highly competitive and Google rewards new products, not sustaining current products. So, most people want to continuously join/form teams for new products leaving little resources for current products. This has been the way since Google started becoming a large company -- so decades now.

This makes sense as to why Google puts out applications that seemingly do the same thing as something else but ever so slightly different and why there are sometimes cool new products that die on the vine years later and if there was no slightly different thing available it just dies or if there is then there is a half-assed migration.

In the Reddit AMA the Google Home team answered a few questions and only the very few softball ones. One interesting comment they made though is that because of the Nest products and generally new products, they believe it is a challenge to support the older hardware, including integrating Google and Nest hardware, so basically you get features removed to make it all work. Of course, there was the promise and supposed internal roadmap that puts these features back eventually, but we've seen that kind of promise over and over from Google and it rarely happens. They are trying to replace Assistant with their Gemini AI which you can do now but it comes with even less features (but parity is coming -- they promise!...one day!). Is that parity with current Assistant which seems to be supporting less and less and working worse?

Google is losing a lot of consumer trust in products I think and it's going to get worse for them as this trickles to the general consumer-base.