This strikes me as a gross misinterpretation. There are no plans to force anyone to use the cloud. It’s just a proposed architectural improvement that would allow for the capability of having qubes (or zones) on different physical devices. If you don’t want to do that, simply keep all of your qubes on the same physical device that you own and control, just as you do right now.
By way of analogy, it’s possible to run both a client and a sever on the same machine. It’s also possible to run them on separate physical machines.
If I wave a magic wand and suddenly grant you the power to move any qube you wish to a separate physical machine (and still have it work the same way), you have lost nothing if you choose not to exercise that power.