'Classical and quantum computers are vying for superiority '
 

http://www.nature.com/articles/d41586-018-07801-3 in the current Nature - quantum computers may not be better for everything.

Quantum computers all involve weird states of matter that cannot exist outside a laboratory. No doubt in the future, governments will use them to spy on us more efficiently, but they'll never be feasible as ordinary desktop machines.

i have heard that before, what i think is that we can imagine tech that is 20ish years away but what we dont understand is what kind of tech is awaiting us(consumers) century in the future.

I suppose the old quote applies:

yeah, love that guy/quote :P