Yes, and the quantum theory being wrong so you can't possibly make a quantum computer is unlikely. I don't say current physic theories are complete and faultless (they aren't) but any better theory would have to explain experiments already done, including most of quantum non-intuitive stuff used in quantum computing.
People often understand (because they are told so) that quantum physics applies only at small scale, and not at bigger one. Actually quantum physics works at all scales, and theory of decoherence explains why it seems to get back to classic behavior at bigger scale and higher temperature. There is an article in Scientific American a few month ago about how quantum effect are also seen at larger scale is many cases.
Any hope that quantum theory is replaced by something more intuitively understandable seems extremely very unlikely to me. As observed outcome of experiment is weird, theory to explain them must be weird also. Actually, the more we understand physic, the more weird it gets, not the other way around.