I want to know the answer to the following question:
Which competitor caused Nintendo to end its restrictions on game developers?
All the background I'm provided with is that "However, competition from Sega's console brought an end to this practice; in 1991, Acclaim began releasing games for both platforms, with most of Nintendo's other licensees following suit over the next several years; Capcom (which licensed some games to Sega instead of producing them directly) and Square were the most notable holdouts.". Is that enough to answer the question?