This was Luther’s point (along with a lot of other Reformers):
One might argue that the Catholic hierarchy’s entwinement with state power and wealth from the 4th century until our own time constitutes one long, largely unrepentant heretical act. It is a rebellion against Jesus’ declaration that his “kingdom is not of this world” (John 18:36), that Christians should refrain from serving both God and mammon (Matthew 6:24) and should render unto Caesar only the things that are Caesar’s (Mark 12:17). The pope’s effort to disentangle his church from the excesses of neoliberalism and nationalist politics is a profound act of resistance against the forces of secularization and worldliness, far braver than his opponents’ defense of traditional marriage.
The problem for this reading of Pope Francis is that such “entwinement” with the things of this world has hardly gone away during this pope’s tenure. If as the old adage has it, actions speak louder than words, the Vatican will show that Francis’ words matter when it gives up the Swiss Guard, the Vatican museums, the pope becomes a bishop of a large metropolitan city like any other archbishop (and has to negotiate properties and staff with local governments), the Vatican bank becomes a branch of Bank of America, and well . . .
A lot has to change for the papacy to be its truly spiritual office.