A big difference is loser pays[1]. It exist in almost all western democracies except for the US. Its precise purpose is to deter things like this, because it's unjust.
1: https://en.m.wikipedia.org/wiki/English_rule_(attorney%27s_f...
1: https://en.m.wikipedia.org/wiki/English_rule_(attorney%27s_f...
For real ? Why ?
Or do you mean attorney fees, because going in a court without one would be practically a suicide?
All lawsuits are different, and simply being named as a defendant does not trigger any enormous payments beyond a lawyer's retainer. I suppose huge cases can call for such a retainer, but those surely are exceptional.