Moore's law is dead and we can only shrink the current silicon designs so far. Quantum computing is one of the answers as to where we go next in terms of continuing to scale processing performance. We might be a good few decades away from this being a commercial concern for the average user however, it's also certainly not the first attempt as superseding traditional chip design and I doubt it'll be the last.
https://www.ibm.com/topics/quantum-computing
