probability theory – Is quantum computing a serious usable instrument for the IT industry?

Following this latest and very exciting research object I can’t find till now a usable computer in that style.

I would like to call actual quantum computing by the topic “researching of quantum elements for computing”. Till now I found only expensive and complex quantum circuits.
We don’t have usable, steerable elements to get definitive decisions by switches. We can’t find that elements in that subatomic level. We only follow mathematical rules coming from probability formulas.