List out some of the GPUs that AMD/ATI had that were better than Nvidia's that people didn't buy? I can only think of one period between 2002 and 2006 where ATI had the best cards on the Market and because of that they had the best market share ever. Since then, it's been failure after failure apart from a few isolated cards. RDNA 2 cards were/are good. Then AMD been AMD messed up the whole RDNA 3 launch.
And if you think that's all nonsense, look at their CPU division. AMD fans were saying the same things about that. That People only buy Intel, that it's tech journos fault, it's lack of money etc. etc. etc. All the same crap over and over. Instead of blaming the actual problem, AMD themselves. Because AMD have turned the whole CPU space around by producing good products consistently. Something they have failed to do on the GPU side of things.
There are people who refuse to buy Nvidia cards full stop. There are rabid, stupid fanboys on both sides of the fence.
And no, it's not their fault there is a lack of competition in the GPU space. Because the majority of people aren't stupid rabid fanboys.
ATI market share peaked in Q3 2004 at 56%, that 50% peak lasted 12 months, by Q2 2006 they were down to 42% and it was perpetually down hill from there.
The Radeon X1800 XT was about the same performance at the 7800 GTX, and like the X800 before it the Radeon GPU was better value, in the case of the X1800 XT it was about $50 cheaper, $550 vs $600.
This was peak ATI market share.
Fast forward to the AMD era, the HD 4870, by this point ATI's market share had already fallen to 35% and AMD had bailed them out, the 4870 was the first GPU designed by AMD.
The HD 4850 was $200 and the HD 4870 $300, the GTX 280 was $500, the HD 4870 was as good as the GTX 280 and nearly half the price.
AnandTech.
For now, the Radeon HD 4870 and 4850 are both solid values and cards we would absolutely recommend to readers looking for hardware at the $200 and $300 price points. The fact of the matter is that by NVIDIA's standards, the 4870 should be priced at $400 and the 4850 should be around $250. You can either look at it as AMD giving you a bargain or NVIDIA charging too much, either way it's healthy competition in the graphics industry once again
The HD 4870 was launched in Q2 2008 at 38% market share, one year later AMD market share was down to 31%.
Q4 2013 AMD launched the R9 290X at 35% market share, it beat the GTX Titan at half the price and later matched the 7800 Ti at $200 cheaper, one year later AMD's market share fell to 25%.
ATI reached its peak 50%+ market share with GPU's as good as Nvidia 10% cheaper, AMD lost market share again with GPU's as good as Nvidia but up to 50% cheaper, explain that.