I have come across quite few startups who are trying a similar idea: break the nvidia monopoly by utilizing AMD GPUs (for inference at least): Felafax, Lamini, tensorwave (partially), SlashML. Even saw optimistic claims like CUDA moat is only 18 months deep from some of them [1]. Let's see.
[1] https://www.linkedin.com/feed/update/urn:li:activity:7275885...