I agree on the could, but it's not quite that black and white in my mind. Of those 10 teams, let's say Lawrence and Wilson go to the Jags and Jets, so now we're at 8 teams for 3 remaining "top" guys. All 8 teams might like those three, but it's doubtful that all 8 will like them all enough that they would draft them while still having a QB in house. For example, Minnesota might look at someone like Lance and say, "If he's available, we have to take him, and we'll deal with Cousins later." but might feel that the other two wouldn't be worth that investment. So you start to eliminate suitors as "their guy" goes off the board.
You're definitely right about the bidding, because all it would take is Miami either drafting a guy by surprise, or trading that pick to someone who takes a QB, and all of the sudden there's a mad scramble for the last two. But I doubt all the teams that could justify drafting a QB also A) actually want to and B) will like who's available to them enough to pass on another talented position that could help their current QB now.