I have contacted local authorities twice about anti competitive behavior from Chrome.
If two - three other Norwegians do the same that should start to look like an earthquake ;-)
Same if ten - twenty Germans or Brits or French do the same.
I would mention:
1. that some of their web properties (calendar and YouTube) have been intentionally incompatible with Firefox as evidenced by how well they work in Firefox if one changes how the browser identify itself.
2. How they have pushed Chrome as a "better browser" on the front page of Google (were no one else have been allowed to advertise) to Firefox users since way before Chrome was anywere nearly as good as Firefox, making it both a lie and - more importantly - a massive abuse of dominance in one market to gain monopoly in another just like Microsoft did with IE.
As we saw yesterday with AWS authorities are willing to punish rampant abuse if they have a good case and this definitely is one.
Edit: since this comment is getting a lot of attention the relevant authority in Norway is Konkurransetilsynet with web address https://konkurransetilsynet.no
(Finding the exact correct form on that site and for this purpose seems to be an art and/or science it seems but if you can't find any just submit somewhere and explain the situation.)
It would be beautiful if everyone could post underneath with the address to the equivalent office in your jurisdiction.