CCP games probably with EVE Online, maybe? They’re the company that started that whole pay for game time with in-game money bit. A pristine reputation goes basically to GGG and they don’t share their financials with anyone. The only things they have shared is information on their two fund raisers and that got them 1.2mil+2.5mil. They started with a team of 20 and run a team of 50 now.
Source: http://www.develop-online.net/news/path-of-exile-secures-1-2-million-in-crowdfunding/0113205
Source: http://www.nzherald.co.nz/business/news/article.cfm?c_id=3&objectid=10862594
For comparison with another content rich game: Witcher 3 made 5mil in it’s first few weeks and will continue to have trickle in money for a long while. And CD Project is pretty ecstatic over that. Think they paid for the game already and then some.