Just a bit of context in addition to what has been said...
1. Ticket prices are set by the rules of supply and demand, not costs.
2. "Inaccessible" is relative. For many New Yorkers, a movie is inaccessible.
3. As noted, there are a wide range of prices for Broadway shows. No, not for the ones that are in high demand, but for the rest, whether through discounts, TDF, paper, lotteries, SRO, etc.
4. Many/most shows have at least some accessibly priced tickets.
5. For the most part (i.e., not counting the NFPs), Broadway is a business. Businesses in capitalist countries have an obligation to their shareholders to make money. Most Broadway shows don't make money but the obligation remains, even if it translates into losing as little as possible.
6. If you don't like our economic system, work to change it. If you decide to do this, let me know where, when, and how, and I will try to join you.