In warehouses apparently, retailers like OCUK are not going to sit on much stock themselves as they don't want to get left with the bill.Where is this mythical stock of 3000? Looking at ocuk I can only see a couple of models of 3090/3090ti, thats hardly a years worth of unsold gpus.
4090 will sell out, I can bet you.
It'll sell out day one I'm not saying it won't give it 2-3 months till all the big spenders have their cards and sales will fall off a cliff.