Ok then, highlight all the times where a market has resulted in a monopoly with out underling government regulations limiting the ability of new entrants to the market.

I do believe government intervention has many unintended consequences but I'll take a stab at this. How about google search?

That was the obvious rebuttable, and to be honest I have a hard time countering that however the obvious statement is search really a market since it is a "free" product. One has to ask what is the actual market, is it the search engine or the advertising that pays for the search? Google while dominate is not a monopoly for Online Ads, so while they command a 90-95% market share in "online searches" that is not the product they sell so traditional market dynamics are not at play so I am hard pressed to call online search a "free market" given nothing it being sold, what is being sold is the ad space on google search.