I’d guess that OpenSea will hope that 0% fees makes a dent in marketshare and save them having to rush to a token like with the Sushi/Uniswap saga. 

The big difference is that Blur innovated with their bids model and UX versus just copy paste.

my highest conviction view about NFT marketplaces is that market structure will continue to rapidly evolve, and that it is very hard to make any predictions about market structure in 2 years

Cofounder, Managing Partner @ Multicoin Capital

I agree with this. The known unknown is if liquidity can reasonably form onchain.