That’s only the PC version, not including console versions, their online service (they rent servers), merchandise and Mojang’s other games (which aren’t very successful at all).
I think the large difference between revenue and profit is mostly down to licensing fees that Mojang has to pay to Notch. At any rate, it seems unlikely to me that a 40 person company could cost nearly $200M to run per year, especially since I really struggle to come up with any significant costs besides just labour (and even if every employee costs half a million per year that’s still only $20M). But I obviously don’t actually know this for sure.
That's a fuck ton of revenue if there are only 40 employees. Growth might not be increasing, but I can't help but see that as a lot of sales.