I don't know what you mean breh. Shoes never really sell out quick unless they are limited edition or hypebeast shoes like (retro Jordans or foams). General release usually sit in most places. I wear a size 13 and they are harder to find in outlets if its a decent colorway.
Gold Medals, Jades, Jewels, Lavas sold out almost everywhere within a few days to a week. Other colorways are picked off week by week as people have the money for them. Nike is not stupid, they are releasing all these colorways for a reason because they know that eventually they will make a profit even when they hit outlets. It doesn't cost that much to make shoes, plus they use mostly synthetic material, rarely see full-grain leather anymore.
The shoe game is saturated, way more heat comes out monthly then ever before. Back in the 90s, there might be 4-5 shoes that sneakerheads wanted in whole year. Some were just other colorways of the same shoe. Now, you see that in a 1-2 month time frame. People have to pick and choose, but at the end of the day Lebron's line makes A LOT of money for Nike.