(CNN) The White House has not extended invitations to Facebook and Twitter to attend its social media summit on Thursday, people familiar with the matter said.

The people, who spoke to CNN Business on the condition of anonymity, suggested it was not surprising. They said they believe the summit would amount to a right-wing grievance session and was not aimed at seriously discussing some of the issues facing large technology companies.

A spokesperson for the White House declined to comment.

The White House announced the summit in June, describing it as an event to bring together "digital leaders for a robust conversation on the opportunities and challenges of today's online environment."

The White House has not yet publicly disclosed who it has invited.

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