Not really, the EU is democratic, and generally there's skeptisism in the EU about a liberal rail market.
The Fourth Railway Package explicity allows tracks and trains to be owned by a single holding company. The main point of the package was things like harmonising safety standards across europe (so if you wanted to run a train from london to warsaw you wouldn't need to get safety certification from UK, France, Belgium, Netherlands, Germany and Poland).
It will mean that a given EU government can't use the rail industry as a way of hiding state aid to people/industries. If SNCF are good, that's fine, they continue. If DB come along and say they can run France's network for half the cost, then DB get the job.
> I'm personally fed up to be treated like a thief when I forgot composting my ticket
That's because you're not traveling with a valid ticket. Try driving off from the petrol station without paying, or boarding a plane without showing a boarding pass.
> Also the price lottery for TGV tickets is infuriating
It's demand led, like planes.
> the commercial strategy of the SNCF is to offer cheap TGV which lacks any confort to kind of punish you not buying the more expensive option.
So buy the more expensive one if you value the comfort.