Microsoft could - along with Apple - but I think both of those companies are way too smart to try and enter the market now.
Youtube gets a sort of pass for the crap it's pulling since it's pretty much alone (Sorry - who's this Vimeo fellow you're talking about?) but any other major video service would be held up in comparison against Youtube, as is the way with society, the negative will shine through. If you start writing video suggestion algorithms today how long will it take you to be confident that "Pussy cat strolling across the back porch on a wet afternoon" isn't immediately followed up by WAP?
Youtube gets a sort of pass for the crap it's pulling since it's pretty much alone (Sorry - who's this Vimeo fellow you're talking about?) but any other major video service would be held up in comparison against Youtube, as is the way with society, the negative will shine through. If you start writing video suggestion algorithms today how long will it take you to be confident that "Pussy cat strolling across the back porch on a wet afternoon" isn't immediately followed up by WAP?