[waterlesscloud]

Bing may be marginally better than Google. It's certainly possible that it is.

But marginally better doesn't matter much, which is why I was careful to say "notably" better.

Search now is nothing like what it will be in a decade, and someone is going to make that leap. Might be Google, might not.

What happens when someone makes that quantum leap in delivering the information you want?

If it's not Google, the ad network disintegrates at least as fast as the search users vanish.

I would argue that Youtube has the most lock-in of any Google product, with Gmail second. Neither is invulnerable, but Youtube in particular will be hard to pull folks away from. Moving video around is tedious, and people largely just won't do it.