A Democrat source told Politico that the summit itself was held simply to "give a face to gridlock, in the form of House and Senate Republicans." (Link to story here.) It was never intended, at least by the Democrats, as a forum to share ideas or work toward some agreement.
Plans have already been made, according to the same Politico story, to push toward the shady, partisan, Democrats-only process of reconciliation next week.
Public opinion be damned. (Sometimes a picture is worth a thousand words.)