I'm on three in the UK and I pay 18 quid a month for unlimited data pretty much everywhere in the EU, on a rolling contract that I can cancel at any time. I ass

I'm on three in the UK and I pay 18 quid a month for unlimited data pretty much everywhere in the EU, on a rolling contract that I can cancel at any time. I assumed that other EU countries would have similar offers since they are sharing each others networks, is that not the case?