True if you mean the thing we call capitalism in the US.
The only reason the price of a $1 piece of plastic can possibly be so high is because of a very noncompetitive situation created by various cronies and abetted by regulators.
Let's call it what it is. It's not capitalism, it's simply a corrupt regulatory system and firms that have learned how to exploit it to their advantage. it's nothing like a market that allows competition, and the regulation is nothing like a fair referee that allows the best player to win.
Under actual capitalism, there would have been price competition and perhaps (gasp) a startup would have started selling epi pens for a reasonable price just as Google started offering massive email storage for a reasonable price, etc.
While I understand the emotional reaction that it is "essential for life" (I have family members who rely upon them), let's blame what is actually at fault, laws that allow firms to do this sort of thing and prevent solutions from emerging.