I'm the very definition of a "lurker" but I just wanted to throw something out there....
All this talk of how BP being to blame for all the new sellers out there is way off base. The number of resellers was growing long before BP got off the ground. Here's a (relatively) quick timeline for you all:
In 2005, I didn't need to wake up before the sun to hit a clearance isle at Walmart - I could stroll in any time before the next weekend and basically be assured to find everything. I'm pretty certain that not even once was an isle wiped out before I got there.
By 2009, it was starting to pick up a bit. Most of the Walmarts in populated areas would be wiped within a day or two of a decent clearance though the more rural ones would still linger a bit more. You would now occasional run into AFOLs in the isle as well, which was certainly strange at first! Also at this time, prices of bulk lots of Craigslist skyrocketed. For those who weren't around in the 2000s, back then you could pick up 50lbs for $100 nearly every week! And most lots were not cherrypicked by the sellers - loads of minifigs, near complete expensive sets, rare pieces were basically always included. Now $100 might get you 20lbs with no minis :/
By 2011/2012, places like Brickset and toysnbricks and whatnot were attracting people to their forums to discuss reselling and investing. Boom. Any part of the cat still lingering in the bag finally jumped out into the open. Clearance was now a crapshoot of getting lucky and hitting a Walmart before somebody else. Besides, these days most of the desirable sets don't even make it clearance. LEGO is popular enough now where most good sets sell out at full price. Honest, I don't even go hunting anymore. My closest 2 targets and that's it for me. I live in NYC (no walmarts in the city) and the tolls and gas required to hunt through Jersey for the off chance of finding something is just not worth it anymore.
Now Brickpicker comes along and makes what used to require 10 minutes of research now take only 5. Honestly? So what? The market had ALREADY changed. Many people, new and experienced both, just did not see it. It's not like it is very difficult to notice that a LEGO set doubles it's price after a year. Like I said, 10 minutes on eBAy and how many of you started investing for yourselfs? It doesn't take a genius to flip LEGO guys...
The "Good Old Days" sure were easy but they're long gone my friends. But that is no reason to fret. Find a way to adapt and survive or start dumping you stuff now. It most definitely will be more difficult as time goes on but I can assure you that as long as TLG is around there will be an aftermarket of some sorts for parts, minis, and sets. Whether you make any money in the changing aftermarket is entirely on you. Blaming others, deserving or not, doesn't help you move forward.
Now....Back to lurking comfortably
--Gary
edited for typo