To try and control impulse shopping, I immediately grab an item I think I want.
I will continue shopping for things I actually want/need, until I look at or feel for the thing I originally grabbed. I will lose sense of interest of grabbing it and put it back.
It takes practice and time. Especially works if you know, are low on money anyways. The idea of this is, to get you thinking about what it is about that thing that made you want it and whether it would have any use or make you happy having it.
If it doesn't after the time you've been having it around, be it holding it or in the cart, then it wasn't meant to be. It was simply an impulse.
They already are. It's called - sales.
The problem are people going out in droves, willingly spending $70 or more on special editions. They've caved to FOMO and it is a them problem.
We're still in the best age of gaming where there are sales in all directions.