The eyeglass market may seem highly competitive. There are seemingly endless brands and styles available. As it turns out, the market is much less competitive than it appears.
Start with the short video (5 minutes) from Adam Ruins Everything
Then read over this short article from Forbes:
Was this surprising? Is there a role for government in this situation? What, if anything do you think should be done? Have you encountered similar situations in other products or markets (Just some possible questions, discuss what you found most interesting)