Indeed. And it is even worse: We do not know whether there even is a possible solution that would be practical. So far, it looks like that even for the numbers for raw, uncorrected qbits, effort scales exponentially in the number of qbits (!) and the length of the calculation (!). And that is the easy case that does not give you anything worthwhile. Effective qbits are far worse. For reference, the conventionally computer revolution was driven by an inverse (!) exponentially scaling effort in the number of bits, and no dependency on the length of the calculation.
If your effort goes up exponentially, you have no chance for scalability ever. It is simply not possible.