The ideological justification of this was, in the US, basically made by libertarian, Koch-brother-funded think tanks and incursion into almost every economics department in the country until even high schoolers are getting taught who Freidrich Hayek is and are forced to read Ayn Rand.

Yep. Literally every econ professor I had in undergrad was a right-wing libertarian. It wasn't until after I graduated that I discovered that our econ department was funded by the Koch brothers and they actually had a contract with our school that gave them influence in hiring. I had lectures in environmental economics where we were told that we should simply ignore the negative externalities from climate change because addressing the issue would result in excessive opportunity costs. We even had professor-led Ayn Rand book clubs.

The Koch brothers through their foundations and think tanks heavily promote the Chicago school variant of neoliberal economics through their funding of academic institutions across the country. A comprehensive list of these Koch-funded schools: https://www.sourcewatch.org/index.php/Koch_Universities#Koch_University_Spending_and_Academic_Freedom