At some point in time, the only way to get a phone hardware was Bell Telephone Company. That did constitute a monopoly: https://en.wikipedia.org/wiki/Breakup_o

At some point in time, the only way to get a phone hardware was Bell Telephone Company. That did constitute a monopoly: https://en.wikipedia.org/wiki/Breakup_of_the_Bell_System https://en.wikipedia.org/wiki/Breakup_of_the_Bell_System