It goes beyond things not working properly. Google regularly disables working features on competing browsers. Google search results for example display more information when you use Chrome. How much more intentional can it get?

All these large American companies are extremely anticompetitive. That’s been the case since the US stopped seriously enforcing its own laws on competition and will remain so until a regulator seriously slaps them. Europe is trying on the most egregious things but they are still not hitting hard enough.