Yes, but what I said previously applies Their service costs 60€/year. That's about 830 new customers required just to pay the subway ad, do you believe they'll be able to sell 830 new full-year subscriptions a month? I don't believe it. And I'm not even factoring operational costs.
I’ve even seen Duckduckgo billboards and whatnot. If they can afford it, so can Mullvad.