I bet you'll see a pretty tight correlation between rate of ticket price increase and rate of population growth. This isn't a "capitalism ruined X" problem. It's a "too many people" problem. When supply is so far outstripped by demand of course prices soar.
Sure but this chart refers to the most popular artists of a given time period. Regardless of how many concerts there are, there will always be one with the most demand.
If you could find data on the median ticket prices or something like that, you may have a point.
Yes, but there's only one Taylor Swift and she can only perform for so many people at once.
You can still to see less-popular artists for a few bucks, but for the mega-stars the population increase is absolutely a factor because the supply can't be increased while the demand is growing