Luckily, in much of Europe, overly broad non-competes aren't enforceable: https://en.wikipedia.org/wiki/Non-compete_clause#Europe
Enforceability is only one (small) dimension of the problem - arguably the chilling effect it has on future employers (who simply don't want the show up in court, even if they will win) is larger.
The threat of litigation is often stronger than the litigation itself, especially against smaller entities. Overly broad non-competes are more a bullying tactic than they are an actual contract.
The liability would not exist if the non-compete were unenforceable as it is in places like California.