The trouble is, many of us can make similarly bold claims about NVIDIA, who also aren't above shipping unstable drivers, fudging benchmarks, or more recently just outright crippling the performance of their regular cards to make the workstation-class cards that cost an order of magnitude more seem more attractive. They're also heavily promoting their proprietary CUDA technology over open standards, yada yada.
If a credible third party competitor came along, whose cards were fast enough and whose focus was on quality and support rather than winning every benchmark they can, I would be happy to try their kit instead of either AMD or NVIDIA next time I put together a machine. Unfortunately, as long as there are only two serious players in the game, the attitude of "never again" just means you can never build more than two PCs, which doesn't really get us anywhere.
The worst part about telling someone your new idea is "It's been done already". Anytime someone says that you know to just stop talking to them and walk away. Burger place? It's been done already! Tech blog? Been done already! I have seen more startups using existing ideas become successful than original ideas.
