Big tech pays it's taxes in Europe, via Luxemburg and Ireland in a 100% legal way. If Europeans countries are serious about collecting tax revenues they claim should be theirs, all they have to do is simply write it in the tax code.
If Europe wants to compete, the first thing it has to do is fix it's talent retention problem. Build more and pay more.
Easy to whine about these "evil foreign tech giants", harder to tackle the real issues! Will paying coders more get bureaucrats re-elected? Will going after large corporations using the same laws as the tech giants help them getting re-elected?