Just to expand on the World of Warcraft example, an entire zone (Silithus) was completely empty for 6 months (or more) after release. And that is probably the highest income game on the planet right now.
I played CMSF for a few scenarios and there are problems, but nothing that is game breaking. I am perfectly happy to wait a couple weeks for another patch before I get too involved.
In the mean time I'll try to simulate CM style missions in ARMA except from a different POV.