Well, in a nutshell, what changed is that the right of the people to own and accumulate property and extract rent from it, is enshrined in the law and enforced.

Well, in a nutshell, what changed is that the right of the people to own and accumulate property and extract rent from it, is enshrined in the law and enforced. Also, which less important but provides an important safety valve against government misbehaviour, people are free to travel abroad, reside, and work everywhere else in the EU - so a government can't take these freedoms away: bailing from EU means quick end of everything, it's just technically impossible no matter how hard they try, and taken capitalist freedom away means people will vote with their feet. That's a pretty huge difference, no matter which particular group of people is now in power.