In case you have a good idea for an (XR) project that needs funding, and that is in the space of “reclaim the public nature of the internet”, NLNet has a call for subsidy (5-50k per project). Deadline is already February 1st, 12:00, though
The page explicitly mentions VR/AR/Web 4.0:
Together we can create a strong and open internet for all, and bring about new paradigms like the European Commissions vision for Web 4.0 which aim to harness upcoming techologies like virtual and augmented reality, generative AI and intelligent mediators in a responsible way so they may sustainably serve society.
From https://nlnet.nl/commonsfund/guideforapplicants :
Criteria for awarding financial support
Projects are judged on their technical merits, strategic relevance to the Next Generation Internet and overall value for money. The key objective is to deliver potential break-through contributions to the open internet. All scientific outcomes must be published as open access, and any software and hardware must be published under a recognised open source license in its entirety.