I think that it is because they are in D.C. Everyone in that area thinks only one way. Weak people are influenced by what their peers are thinking. They get to D.C. with one mindset and start socializing with the D.C. crowd and gradually they begin to start thinking like them. They begin to get only the D.C. thought process and begin to believe that the entire country agrees with them. The press makes them heroes for coming around and they relish the praise.
Trump is the fly in the crowd I described above’s ointment. And, as seen lately, these posers will let cities burn, if it brings them a majority. I am quite certain we've been building toward a reckoning for so long that now only a sustained period of financial and physical insecurity will bring about constructive change. Hope I'm wrong; “But I don't think so.”