Scalpers exploit a lack of supply, the same as ticket master. Normally the answer would be to increase supply but if being in person is important for concerts then perhaps bigger venues or multiple showings isn’t feasible. A culture shift towards something like watch-parties, like football and other sports, may be the answer in the long-run.
Scalpers are a consequence of freedom and perhaps there are good reasons to limit that here but I see it happening in other fields where I think it shouldn’t and wouldn’t want to encourage it (i.e. hardware and software tied to an online account).