It's great that some of it is "proven" but it's the kind of things that don't need any proof, it's obvious that most companies are talking together or indirectly aligned their prices as it's common sense, why wouldn't they do it? I feel law is irrelevant for this, it won't ever stop.

We all do it under some form, if we want to open-up a new service, we will scout the competition and align prices with them and consider them as a base value, which is almost the same thing, that you decide in secret for it "together" doesn't change that the outcome is the same, most prices will be aligned, food is the same, drugs are the same, services in general are the same.

It would be very naive to think that most company owners don't "talk together", even when a major new player comes on the market with cheaper prices, other companies are often already aware of it, in the Bay area startups owner "collude" together all the time.