Pricing is the way in which information about supply and demand is conveyed in a decentralized manner in a free market.

When prices of a good or service goes up, it incentivises other manufacturers or service providers to produce more of that good or service, which increases supply and puts downward pressure on prices.

So to answer your question, higher priced tickets increases supply, which causes lower priced tickets, which benefits poor people.

Eventually prices reach a level where supply and demand match and (for example) concerts are as cheap as they can be given their cost and the demand in the market for them (including the demand from poor people).

This EconTalk episode on price gouging during a natural disaster was very interesting, and somewhat related to this topic: https://www.econtalk.org/munger-on-price-gouging/