Lots of imprecision here. While they did claim that monopolies today are mostly caused by government action, and they did claim that lots of problems are caused

Lots of imprecision here. While they did claim that monopolies today are mostly caused by government action, and they did claim that lots of problems are caused by government ... they didn't claim that all problems are inevitably caused by government. Nor did they claim that monopolies cannot have non-government causes as well as government causes. (If a company has a perfect enough reputation+pricing+etc. that nobody thinks it worthwhile to compete with that company ... then so be it!) Hence their further claim that words were being put into their mouth.