It's not an official number, just an estimate for cone jumpers. For more on cone jumping, see http://bletaverse.com/ But about half the cones are in sims that require PIOF now. I say "about half", as I can't go into those sims to count them and get an exact number. But I know that I run out of cones I CAN use in half the time I used to. You can only use any given cone once per day, some less than that (once every 2 days, once a week, etc.). So once you've used all the cones, you can't earn any more L$ that way 'till the next day. Now there is a bonus for whoever jumps the most cones, but folks who have no PIOF can't try for that top spot (folks in deep red states get held up too, but that's a separate complaint for a separate thread). In effect, those who can't afford L$ also can't earn them (or at least very many of them) through sheer hard work and patience. Sure, we can make a few L$ here and there, but it's a drop in the bucket compared to what folks with PIOF can make, even if they don't buy them. And though I don't fish myself (I never could get the hang of it), I'm told by those who do that they have been hit by a similar road block.
And yes, I opened a MP shop before the new rule went in, and yes, I have a couple items for sale. But since I can't think of anything to make that anyone wants to buy, I'm not making any L$ that way. I don't blame LL's ToS for that, just a sucky economy and my own poor imagination. I have 3 items, and they aren't exactly flying off the shelves.