One difference is that video games often take a lot more investment - at least a full-size, not-a-game-jam one. That is, the risk and upfront investment can be a lot higher. But then I'm sure that with artists it's also years of slowly building up skills, reputation, contacts, etc - the author himself seems to imply he basically got lucky with the honey bear, and I feel it's the same with e.g. video games. Quality wise a lot of games are fine, but despite the hours / years invested they may never be successful. This is an issue in high-budget games too, with several high profile failures in recent years even though they did everything right. On paper.