Depends on your definition of "free market". If you mean libre non-profit exchange between consenting peers, i'm all for free market. If you mean a profit-based economy where the people who "own" everything dictate life conditions for the rest of us, i'm pretty much against it.
> Is it to much to ask that the opinions are supported by evidence?
Economy is not a field i'm familiar with so i can't unfortunately provide evidence, but it always appeared to me that with some notable exceptions, regulations protecting consumers from corporations had great effects: lower prices, better quality, better customer service...
Half the articles i read about the USA seem to be about medication prices rising twofold every few years despite being well-studied/produced for decades (like insulin), or ISPs injecting their own advertisement or blocking services from competitors or making lawsuits against municipal ISPs, or people raising debt just for having a lawyer or receiving an education, etc.
There's a lot i hate about France (where i reside), but i'm certainly glad we have "medicare for all" through a national insurance (sécurité sociale), net-neutrality regulations, and free legal defense and education. Although as some would point out, the french governments of the past 30 years or so have been hard at work to dismantle all that.
Competition does not advance humanity. Cooperation is what brought humanity so far (see also: Kropotkin, Graeber, etc). Competition does not reduce costs, except occasionally when a mogul wants to capture the market (like free.fr did when they offered 30€/mo unmetered xDSL back in the early 2000's, which they don't do anymore now that they've become big enough to assert their position).
Don't get me wrong, i'm not advertising for State monopoly. On the contrary, i laud autonomous projects and infrastructure and i'm very critical that in France it's illegal to even build your own house for private usage (unless you follow very strict regulations) or to produce your own electricity (unless you sell it back to EDF). I just don't think that what most people refer to as a deregulated "free market" (based on money and private property) has better outcomes except for the 1% who own everything.
Famous anecdote in french FLOSS circles: when the telecoms regulator (ARCEP) began the process to "open competition" for the ISP market, there were hundreds of ISPs across France and the dozens of representatives couldn't fit in a room at ARCEP offices. A few years later than that, there were only 5-10 represented operators left. Now you can count them on one hand, and the ARCEP people seem happy/relieved about that, as if they'd done their job implementing "competition" by reducing the number of competitors.