Yes, there's an entire body of work, starting with Ayn Rand, that vehemently argues that government interference in the economy is what leads to monopolies.
The person you're replying to was using an example to show how there isn't consensus, they weren't saying they agree with Ayn Rand. In fact, given their tone, if I had to make I guess, I'd say they disagree with her take.
I think we've been far too generous in the last decade with whose opinion is relevant to whether there is a meaningful "consensus" on a matter or not. Hence why I say that Ayn Rand is to economics as geocentrists are to astronomy - they're simply not relevant to a definition of consensus that has any value to me.
My opinion of Ayn Rand is no more flattering than yours, but I accept that she has quite a few powerful 'followers'. I wouldn't be surprised if quite a few of the current administration were big Ayn Rand fans. Their opinions may be absurd but, sadly, they are also relevant.