The 4% number was a misquote. Actual number is reported to be 20%.
http://www.edge-online.com/news/%E2%80%9C4%E2%80%9D-report-false-says-forbes-interviewee
“This was just a big mistake,” says a company spokesperson at EEDAR. “What Geoffrey said was that only 20 percent of games that start production will end up with a finished product. And of that percentage of finished games, 20 percent will make a profit.”







