Indeed. I suppose it depends on the circles in which one runs but there are still companies actively writing COBOL (or were as of 2011 as far as I can personally verify).
And they were making millions of dollars from that one small segment of the company.
I'd wager that in the enterprise (whatever that means) that where NoSQL is used in companies more than, say, 10 years old, it is generally for non-critical, exploratory one off projects. I don't even think NoSQL is close to 50% market share among what I'll call the silent majority of more conservative, more enterprisey tech companies/IT departments. I have no figures to back that intuition up with, however.