Unfortunately I can't see any new web technology gaining wide spread acceptance if it's supported only by Opera - they have such a tiny percentage of the available browser market that most developers don't even bother to support their browser. Opera should colloborate with Mozilla and attempt to gain traction that way by building on W3C standards. It's possible Opera could see some success by focusing their new technology on the mobile segment but longer term the boundaries between the desktop web and the mobile web will become less obvious, as recognised by Ari Jaaksi in his last blog post.