That's a valid concern. I'm not asking to go with a totally unheard-of outfit, but we can take a call depending on the particular use case. For instance, as a note-taking app I've stuck with Evernote for 2+ years now, and I don't see a reason to switch to Google Keep. I love the single-sign-on and all the auto-integration goodies that come as a part of Google suite, but that is not what you are always looking for.
Google Keep is an iOS/OS X Notes competitor, not an Evernote competitor. Their Evernote competitor was Google Notebook which preceded Evernote and was already shut down.