Not one provider apart from GCP has TPUs, they don't have them available for consumers to buy & experiment with. No-one experiments
multi-day stuff on the cloud without big pockets or company money especially not PhD students or hobbyists
AWS has their own accelerators, and they're a much better value than their GPU instances.
Good luck getting frameworks & academics to cater to test & export for this arch
A quick google search brings up "AWS Trainium". But it's telling that I had never heard of it. And like TPUs, you can't plug in a smaller version in your desktop PC.