It might be ASB to make it work. However, it would leak sooner or later so mind control would end up in the private sector.
I think it would be sort of cool if it develops like the computer. At first those big things used for military intelligence, costing megabuck, later more portable and cheaper while still more powerful. Then a comercial break in the 80's (and due to butterflies, jobs outsmart Gates).
I imagine controlling pets or a training aid repeating " keep working" thoughts might be appropriate.