They have made the distinction before. If you build your own aircraft it can be certified as experimental. You can do anything you like with it that you might do with a Cessna, except commercial operations. I believe you can take a friend for a ride and split the fuel costs, but you may not profit. Why the type of plane matters is not clear to me. Likewise, flying a drone is legal, taking video is legal, why should profit from it be illegal? I don't know.
The potential for monetary reward for drone flights fundamentally changes the risks a pilot is prepared to take. If the conditions are marginal or if there's more people around than I feel comfortable with, I pack my gear up and go home. If there was a significant amount of money at stake in "getting the shot", I'd be _very_ tempted to push the limits further than I do as a hobbyist. If there was a large amount of money involved, and the risks of getting caught were low enough, it'd be very tempting to break the law to get the money. I choose to stay right out of that game for those reasons - but you only need to look at the paparazzi industry to know that when the money is right, people are happy to do impolite, dangerous, immoral, and illegal things to "get the shot". Even as a hobbyist multicopter builder/flier I'd rather not see "my hobby" being used that way - at least not without some accountability and consequences for people who choose to behave like that.
I'm not sure I agree with that. As someone who has flown RC Helicopters for a long long time, one of the reasons I haven't gotten more into drones is a) they are "to easy" to fly and get boring [1] (if you don't believe me try flying a 60 size Gas RC Chopper with no gyros) and b) I can't make any money right now because of the "no commercial" rule.
While I don't think people are flying drones to make practically nothing on youtube.com (I think they want to make cool videos obviously) the fact is if you are going to have a rule that says "no commercial" and it hasn't been further defined then you have to stick to that.
Separately, there is a similar quasi rule with regards to using a domain name for commercial purposes (re: Trademark and UDRP filings) and often a domain name owner will lose a case if they don't have a good attorney and if the opposing party is able to take the ads and say "they are making money from my trademark". The amount of the money they are making doesn't really enter that much into the picture.
[1] I bought an AR Drone which I "flew" exactly one time. It's similar to the difference, if you are a skier, between the bunny slope and a black diamond (and I don't mean an East Coast USA black diamond..)
That said if you've never flown a gas rc you should give it a try (if you can afford it since they are typically more expensive than an electric especially when you crash and have to fix them..)
What the other four are thinking is beyond my ken.