is not the technology, but the greed from the Service Providers

For sure it is greed from providers, leaving you no other choice than to use it :)

European union is moving into the right direction with Roam like at home

The EU "roam like at home" rules mean that when you use your mobile phone while travelling outside your home country in any EU country you don't have to pay any additional roaming charges. You benefit from these rules when calling (to mobile and fixed phones), sending text messages (SMS) and using data services while abroad.