I have read: https://grants.zfnd.org/guide and it’s unclear to me if I can spend some resources on my own building something and then apply for a grant once it is ready. The grant would factor in the labor cost as if it was submitted before it was built as opposed to only accounting for maintenance cost. I think it’s pretty good considering it completely de-risk the funding (project never getting completed). From a builder perspective, it’s not so much finding what to work on than finding stuff I want to. Building and the maintaining something is extremely time consuming. If you apply for a grant, get it, build the thing, and figure out that it’s a real pain and you don’t want to do it then it’s an awkward situation for everyone.
On the other hand, we must consider the case where people retroactively ask for grant money on projects that have been out there for a while. I believe that we can rely on the good judgement of the grant committee but if this is really a policy issue then a middle-ground would be something like Github Sponsors (https://github.com/sponsors) where the foundation actively supports existing projects on a monthly basis.