The opposite happened to me relatively recently. I was a national socialist fascist type for the past few years but then I realized how much big government sucks after witnessing all the censorship, overreach, and bureaucracy that comes with it.
I never cared much for economic systems when I was NS, but after reading about Austrian thinkers and listening to speeches given by Murray Rothbard, Milton Friedman, Hans-Hermann Hoppe, etc., it's pretty plain to see that a laissez-faire economic system is the most efficient.
I already had a general distrust of (((central banking))) so the anti-fedpill wasn't hard to swallow.
Anarcho-capitalism is essentially the natural endpoint of a completely free market and I couldn't think of anything the state provides that a private institution couldn't do better.