Soldato
I'd wager most consumers don't care about brand at all. Nvidia is just the default option.They tried lowering prices before. The RX 580 was much cheaper and faster, yet the GTX 1060 became the best selling card ever. If the consumer doesn't care about the cost or the performance, then it's all about the brand, which is so sad.
Take a look at the OCUK prebuilt section for instance:
There are almost more prebuilts that feature a 4060 in them than the entire AMD lineup.
You buy a gaming laptop? Nvidia.
The amount of consumers that actually know what an AMD Radeon even is vs parents just buying a prebuilt gaming PC for their kid from OCUK or some highstreet place or whatever must be miniscule.