This kind of investment would heavilly rely on taxes, but would also create the ideal conditions for internet giants to make lots of business.
These internet giants chose to put their headquarter in a small EU country that chose to lower the taxes to attract companies. This country doesnt care for fiber, and doesnt make investment at all, but its no big deal, it only represents a tiny part of the EU ppl.
This is a nonsense to pay taxes in a country for business made in another one. Unfortunately this nonsense is part of the UE.