Competitive comparison between Blur and x2y2:
In fact, x2y2 was already aware of the potential threat of Blur not long after Blur came out, because Blur has a zero renewal fee, while x2y2, which is also an optional royalty, has a 0.5% renewal fee.
x2y2 once resisted Blur by restricting API keys. Although it finally solved the problem of purchasing x2y2 NFT on Blur, it is still impossible to sell NFT on x2y2 through Blur.
