Probably. The Clockwise folks were from a startup that was bought out by Salesforce before they left to do this.
IMHO, the problem with Clockwise is that there was never a compelling product or a moat they could build with in the space. It was trivial for Google or anyone else to just implement similar enhancements.
Yeah, that would explain it.
I interviewed with Clockwise years ago and was offered a position, but ultimately I decided to pass for this exact reason. This system is great, and I actually used it and loved it, but it was a feature rather than a product.