Likely there's some a/b testing and google has decided that you're more profitable without access to those tools

But on different machines, under different accounts, logged in or logged out?

Maybe.

> google has decided that you're more profitable without access to those tools

Well for any googlers here: this among other things is why you only see a fraction of my queries compared to before: I actively avoid Google now.

It's been happening since before 2010, but sure.