With this type of tiered system and offering all-you-can-eat monthly subscription fee on Hulu you can be assured Youtube will follow.
And the will both fade into obscurity.
I hear rumors Napster is still around. Does anyone use Napster anymore? Really? Everyone used Napster until they started charging. Now no one does. Kazaa was another big one that faded away. Yes, I know iTunes is the same thing and it's going strong, but it was never introduced as a freebie.
Not that I give a damn about Hulu. I haven't read this whole thread but I'm sure someone (heck it might even have been me) has mentioned its utter uselessness as it's only available in the US. (Even if the subscription model changed that, which I doubt, the damage is done.) So it can charge all it likes; it's irrelevant to the majority of Internet users. If YouTube starts charging, well big deal. People will just take their farting dog videos and TV show/music video mashups to DailyMotion or one of the hundreds of other video-uploading sites out there.
Alex