I posted a link to a market for access to systems with high-end gpus at https://lists.cpunks.org/pipermail/cypherpunks/2021-December/093292.html .  The link was https://vast.ai/ .  I believe this market is heavily used by entrepreneurs, researchers, etc.  Most of that is happening on discord and twitter.  Big resources I've been exposed to include https://colab.research.google.com/ https://www.paperspace.com/ https://huggingface.co/ https://www.gradio.app/

The TPU Research Cloud program generally accepts applicants without access otherwise, even if they are not formal researchers.  The reward is access to high-end research machines on google's colab service for 30 days, starting when you choose: https://sites.research.google/trc/about/