O it will be a worse experience because the competition isn’t natural.
The problem is that the competition isn’t "natural" now with restrictions on sideloading, alternative app stores, etc. on a major OS. A notable portion of the mobile OS market, varies by country, is being artificially closed off by Apple's restrictions.
Antitrust laws are nothing new. The reality is that a lot of competition over time has been "government created" (as you put it) by companies having to follow antitrust laws or potentially having to deal with the consequences if they don't. That's a good thing. If not for antitrust regulations, markets would be much worse for consumers and most businesses.
Breaking apart apple with regulation has been tried in US with AT&T and what we have today is a shell of the former company with mediocre offerings. The same will happen in the EU with apple except worse as people will fall victim to all sorts of bad things.
No one is requiring/ruling that Apple be broken up at this point. The results of antitrust cases don't necessarily lead to the breakup of companies and can instead be about addressing the "anticompetitive behavior" through negotiations, court rulings, etc. For example, Coca-Cola and Pepsi have been charged with various antitrust violations over the years but neither has been broken up.