A grant proposal would need to reassure the agency that the organization has the capacity to fulfil the promised research, so for a new organization without a t

A grant proposal would need to reassure the agency that the organization has the capacity to fulfil the promised research, so for a new organization without a track record of successful projects it will mostly hinge on the track record of the individual researchers they can attract; if OP can get some experienced PIs with big names and big CVs,then it would be plausible to get agency funding, but they will likely require nontrivial financial guarantees; but if they attract some fresh PhDs with "space to work rent-free" and a stipend, then yes, most funding agencies will not find their grant proposals competitive enough.