Except that when you do it too often, you get a reputation as a company that you can't trust. I mean hell...even Google+ which was launched with more fanfare than ANY Google undertaking the past few years is now getting the step motherly treatment.
Google taught me one important lesson - when it comes to online services, choose companies that do ONE thing, and do it well. Don't use stuff from conglomorates that have their fingers in dozens of pies. That way, each service gets the attention it deserves, releases updates regularly, and never loses focus.
Ergo, I use Lastpass instead of Google Chrome's password manager, am trying to transition away from Google+, and don't want to use Google Keep. I now use Google for their mature products only - Gmail, Search, Android, and Chrome.
I lost all my Google Health data, my Google Wave data, my Google Buzz data, and my Google reader feeds (at least I could transition that one). Moral of the story: Stick to single service companies.