We already have some amazing financial backers on GitHub Sponsors and Open Collective! Longer term, we're looking at mitigating costs via storage solutions that would allow users to share drive space to help contribute, something like IPFS for example.
A big part of keeping the project free forever is to switch Icosa to a federated system (like Mastodon), so different groups can spin up their own instances to host their own data. Museums for example, could host their own curated collection! Instances and APIs can talk to each other so that all data is still accessible. Never again shall we be subject to the whims of big tech.
I was about to try this link but I stumbled upon your reddit post so I thought I'd share this with you as well. Let me know if it works out for you!
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https://www.notion.so/Tilt-Brush-Oculus-Quest-2eb6f1f4834f4f5f9304ae0ff742460c