Speaking in an investors call today, Ubisoft CEO Yves Guillemot said: "It's affecting the games that we launched and affecting some games that we wanted to launch."
He went on: "The impact is still small because our revenue on this platform is not huge, so altogether the cost will be minimal."
While seemingly relaxed about Sony's online woes, Guillemot did stress the importance of PSN's hasty return. "It's important that they restore the system quickly because lots of our products are multiplayer games and we need our gamers to be able to play multiplayer," he said.
Guillemot wouldn't be pushed into specifying exact gains in revenue for XBLA since PSN's failure, but he did admit that revenues generated on XBLA are generally higher and, with the current PSN outage, "significantly higher" than on PSN "at the moment".