Re: Cue firestorm
That's possible, but extremely unlikely. The state of the art isn't yet even remotely at the point where it can be used for real work of any sort.
But let's assume that it is, and there's some top-secret QC crypto-breaking machine squirreled away somewhere. That would be a billion-dollar machine, and its use would necessarily be limited to very specific, high value cases. 99.99% of the population won't ever be of enough interest to the government for it to spend millions breaking their crypto. Your scenario is more likely after those costs come down.
And if you are in the 0.01% that is as interesting as that, you aren't relying solely on encryption for your security anyway. That would be foolish, QC or not.