Which is a pitch they continue to make, with Drive and Hangouts and each successive launch, but never once cautioning "btw if this doesn't work out for us we'll kill the service". They even relaunch previously failed projects in the same spaces where they've pulled this before, with Keep aiming for the same space Notebook (RIP) did. Do they think we're stupid?
They can't have their cake and eat it. They can position themselves as the trustworthy guardians for whom organising the world's information is the only goal, or they can position themselves as the ruthless capitalists where business is the ultimate goal, but they can't do both.
That's what people object to. You can say that they're naive for believing that a business won't put the bottom line first, but Google has always pretended otherwise, right from the first line of the IPO. "Google is not a conventional company. We do not intend to become one."
Fine, but then "any conventional company would do this" is not a good enough defence for your actions.
This gets repeated a lot (understandable given its launches proximity to the Reader shutdown notice) but its inaccurate. Keep doesn't address the same use case as Evernote/Notebook at all and isn't trying to. Its more of a Notepad/Apple Notes competitor if anything.
I don't like it either, but it's not the same as them just deleting your data suddenly, which you seem to be alluding to.