> The EU just used their regulatory power to force the world's biggest search engine to make their user experience worse in order to benefit other companies.
It's really quite simple, if Google's user experience hinges on them abusing their market dominance then they have no business in the EU.
Even if it means we can't have certain "nice things", I am perfectly okay with that.
Companies have power. Companies with market dominance have a disproportionate amount of power. Why should a company be allowed to wield all that power without being held responsible for it? So if you're gonna be a dominant company in the EU, you're going to have to take responsibility and not abuse your power to stifle competition.
It's not like the "before" situation you sketch couldn't have been improved in any other way. It just so happens that this particular way also ("conveniently") stifled competition in shopping sites by abuse of Google's market dominance in Search.
Why is this bad? Because abuse of market dominance doesn't always result in a better user experience or product. And we can't even be sure that was actually the case now, because of this market dominance, no other company got a chance, the only way was Google.
Also, the problem in your "before" situation was Google serving its users search results that were spammed to death with low quality SEO crap. This was Google's problem (sure it's a really hard problem, but it's theirs). That shit could only thrive because of Google's popularity. Any real competition, like normal price comparison sites, were already suffering because of this (or worse, forced to join this dark side).
The thing is, this problem had nothing to do with the actual competition. But Google chose the solution (abuse market dominance) which drove them into obscurity. Eventually SEO-spammers (whose core business was never price comparison sites) found other ways to game and abuse the system.
If Google would've done nothing, people would have stopped using Google for finding price comparison sites (and back then, Google was really very good for many other things) because the SEO spam isn't useful. Then competing price comparison sites would have had a chance, and who knows, maybe Google's actual web-searching user experience (which is terrible today) would have remained better. I mean that's what we lost when Google tried to become the sites it linked to, instead of helping people find them. Not saying this would be the only solution, it's obviously not as profitable as Google has been while abusing their market dominance, maybe they could have found something responsible in between.
Also, we gotta be consistent. If the EU Commission on antitrust could say "we'll allow it this time because we kinda like the end result", THEN you should be scared, really really scared. Arbitrary application of the law is very bad, every time you encounter it, no matter what.
The Commission established that they've been abusing their market dominance since 2011 (or 2008). Market dominance put Google in a special position of responsibility, they are now being held to that.