Earlier quoted context omitted.
It's all small products which didn't receive traction.
Google Hangouts wasn't small. Google+ was big and supposedly "the future" and is the canonical example of a huge misallocation of resources. Google will have no problem discontinuing Google "AI" if they finally notice that people want a computer to shut up rather than talk at them.
how you define big? My understanding they failed to compete with facebook, and decided to redirect resources somewhere else.