I hear many criticisms against lots of mega churches pastors, some went to the extreme of condemning them to hell.
I would only say there's a warning at Matthew 7 against these people.
However, as for those who love books and sermons by Joel Osteen, Rick Warren, etc. I would respond this: If Jesus had done it the way these pastors are doing, the Pharisees would never be so jealous of him, the Jews would never rise up against him, the Romans and people would never crucify him. All the kingdoms of the world and the glory of them shall be his back then, as Satan put it in Matthew 4:8.