I see this very much as another Pandora's box situation for humanity. Once it's open, both good and bad things can come of it.
The bad being, brain hacking, brain ransome, and perhaps a few other things. You mention a "nondestructive brain machine," but I can't comprehend how anyone will be able to make an implant that could be engineered not to be destructible and still have uber computing power in such a small form. But who knows what advancements are in store this century?
The good, as you mentioned would be, enabling the disabled in many ways never fully realized before. Both personal and professional productivity across the board, in theory, would greatly be improved.
Way "non destructive" was my hand waving risks some tbh. What I mean is safe implants either though regenerative technology to overcome damages, precision so small no meaningful damage was done, or non invasive. I also consider reparability and upgradability/downgradabilty import.