Class B airspace is not one of those places. FOD can very easily take down an aircraft. These guys are going to get the book thrown at them, and they deserve it. It's very much in our best interest as a tech community to weed out people who act with such disregard. If there's an appearance that we aren't responsible enough for this, there will be a backlash and we will have a much, much shorter leash.
It's probably going to be a tension that we see repeated as we explore drone tech, since Class B airspace is often located near large cities that would be good target markets for drone-based businesses.
Even if the FAA grants the low-altitude airspace to drone traffic there will still be problems. The larger, faster high-altitude drone corridors with the most dangerous traffic would be placed the closest to other air traffic. Having better guidance, transponders, and collision avoidance is a start, but nowhere near sufficient. They still won't be responding to ATC guidance and commands. I imagine we'll probably see a tiered exclusion zone around airports for this reason.