Google already warned earlier that they are removing those Google + profiles which representing a brand/institution/industry or anything non-human. Google already issued notice to most of those Google+ business profiles to change their profile or get banned immediately.
Looks like Google started the process and they are deleting those Business profiles one by one. Mashable and Ford’s profile were also banned before but some how they made some agreement with Google later. Look at the Google Plus profile suspension notice got by some business users.
Your profile is suspended
“After reviewing your profile, we determined that some of the content (e.g. text, images, and name) violates our Community Standards or our Names Policy. Please remember that we are currently limiting profiles to real people and will be launching a profile for businesses and other entities later this year.
If you believe that your profile has been suspended in error, or you have recently edited your profile to comply with our Community Standards or Names Policy please submit your profile for reconsideration. Your profile will be reviewed again and unblocked if it complies with our Community Standards.”
Google is suspending those Google+ business accounts on random basis so if you are the one with business profile, go human before getting above notice.