Though Jay Z has said on multiple occasions that he doesn't want Tidal to directly compete with Spotify, it also appears that he doesn't want to give them any advantage, either. Hov's classic album, Reasonable Doubt, is no longer available to stream on Spotify, but it appears that it's the only Jay album that no longer on the service—as of right now.
Of course, if Spotify users want to listen to Hov's classic debut then they can just upload it from their personal library to a playlist on the service. As of now, it's unknown if Jay plans to remove all of his music from Spotify, but it seems that we might be heading in that direction. Though Jay and company just relaunched Tidal last week, they have already debuted exclusive content from Beyoncé and Rihanna on the service.