The client-server model evolves, to powerful effect.
Since the dawn of computing, a seesaw balance of power has occurred between the client and the server.
And as evolution occurs, we see again and again that intelligence will always migrate towards the edge.
In the beginning, mainframes were the size of small buildings and only accessible through timeshared terminals. All the intelligence was in the mainframe, the terminal was only a conduit. Later, the intelligence moved from the mainframe to the personal computer, with the mainframe serving as backup to the client-side device.