For some definitions of “working”.

Working enough that people and companies there exist, live, and are to some degree successful, yes. I've visited multiple times in the past few years and I found it to be pretty normal

“Works on my machine!”

Navalny probably has a different opinion.

There isn’t a country on the planet that doesn’t have people and companies. That doesn’t mean they all have functional legal systems.

My understanding is they have one of the most corrupt and unjust legal systems of the developed countries.