I don't know, market forces can be quite persuasive sometimes. If YouTube keeps up this heavy-handed approach, it's bound to lead to a climate of anxiety and resentment amongst its uploaders. In an environment like that, it wouldn't take that many prominent content producers making the switch to Vimeo to trigger a mass exodus.

It's never a bad thing to vote with your feet and no product or service provider should ever take its market prominence for granted.